Sesotho phonology

Sesotho phonology

*All examples marked with are included in the audio samples. If a table caption is marked then all Sesotho examples in that table are included in the audio samples.
*The orthography used in this and related articles is that of South Africa, not Lesotho. For a discussion of the differences between the two see the notes on Sesotho orthography.
*Hovering the mouse cursor over most H:title| [ɪˈtælɪk] |"italic"|dotted=no Sesotho text should reveal an IPA pronunciation key (excluding tones). Note that often when a section discusses formatives, affixes, or vowels it may be necessary to view the IPA to see the proper conjunctive word division and vowel qualities.

The phonology of Sesotho and those of the other Sotho-Tswana languages are radically different from those of "older" or more "stereotypical" Bantu languages. Modern Sesotho in particular has very mixed origins (due to the influence of Difaqane refuges) inheriting many words and idioms from non-Sotho-Tswana languages.

There are in total 39 consonantal phonemesOther authors may choose to include the labialized consonants as contrastive phonemes, potentially increasing the number by 26 to 75. Labialization does create minimal pairs, as is exemplified by the short passive sufffix, but different authors seem to be divided on whether or not these should be counted as authentic phonemes (especially since Sotho-Tswana-type labialization caused by vowel "absorption" is a fairly strange and rare process).

Besides the passives, the are still numerous minimal pairs differing only in the labialization of a single consonant (note that each of the following pairs has similar tonal patterns):: H:title| [ʀɑlɑ] |"-rala"|dotted=no design, versus H:title| [ʀʷɑlɑ] |"-rwala"|dotted=no wear certain clothing (shoes, socks, gloves, hats, etc); carry (a load) on the head: H:title| [lɑlɑ] |"-lala"|dotted=no lie down (old fashioned or poetic), versus H:title| [lʷɑlɑ] |"-lwala"|dotted=no be sick (old fashioned): H:title| [mʊʀɑ] |"mora"|dotted=no son, versus H:title| [mʊʀʷɑ] |"morwa"|dotted=no a Khoisan person: H:title| [hɑmɑ] |"-hama"|dotted=no milk an animal, versus H:title| [hʷɑmɑ] |"-hwama"|dotted=no (of fat) congeal: H:title| [t͡sʰɑsɑ] |"-tshasa"|dotted=no smear, versus H:title| [t͡sʰʷɑsɑ] |"-tshwasa"|dotted=no capture prey with the intention of killing it: H:title| [mʊɬɑ] |"mohla"|dotted=no day, versus H:title| [mʊɬʷɑ] |"mohlwa"|dotted=no termite(s)

Normal consonants and their labialised forms do not contrast before back vowels (that is, a labialized consonant will lose its labialization before a back vowel).] (plus 2 allophones) and 9 vowel phonemes (plus two close raised allophones). The consonants include a rich set of affricates and palatal and postalveolar consonants, as well as three click consonants (alternatively, one click pronounced with three accompaniments).


Historical sound changes

Probably the most radical sound innovation in the Sotho-Tswana languages is that the Proto-Bantu prenasalized consonants have become simple stops and affricates.The Sotho-Tswana ejective plosives IPA|/pʼ/, IPA|/tʼ/, and IPA|/kʼ/ come from the Proto-Bantu *mb, *nd, and *ŋg due to the radical effects of the nasalization process. The Proto-Bantu stops *p, *t, and *k have usually become IPA|/f/, IPA|/r/, and IPA|/x/ (IPA|/ʀ/ and IPA|/h/ in modern Sesotho) with * becoming IPA| [fu] , and the nasalized forms of these (Proto-Bantu *mp, *nt, and *ŋk) are the two aspirated plosives IPA|/pʰ/ and IPA|/tʰ/, and the aspirated velar affricate IPA|/k͡xʰ/ (IPA|/x/ in most Sesotho speaking communities).

Note that some Sotho-Tswana languages do have prenasalized consonants, or at least have less strict and varied nasalization rules, but this is almost certainly as a result of influence from neighbouring non-Sotho-Tswana languages.] Thus isiZulu words such as "entabeni" on the mountain, "impuphu" flour, "ezinkulu" the big ones, "ukulanda" to fetch, "ukulamba" to become hungry, "ukuthenga" to buy, etc. are cognates to Sesotho H:title| [tʰɑbeŋ̩] |"thabeng"|dotted=no, H:title| [pʰʊfʊ] |"phofo"|dotted=no, H:title| [t͡sʼexʊlʊ] |"tse kgolo"|dotted=no, H:title| [hʊlɑtʼɑ] |"ho lata"|dotted=no, H:title| [hʊlɑpʼɑ] |"ho lapa"|dotted=no, and H:title| [hʊʀɛkʼɑ] |"ho reka"|dotted=no (with the same meanings).

This is further intensified by the law of nasalization and nasal homogeneity, making derived and imported words have syllabic nasals followed by homogeneous consonants, instead of prenasalized consonants.

Another important sound change in Sesotho which distinguishes it from almost all other Sotho-Tswana languages and dialects is the chain shift from IPA|/x/ and IPA|/k͡xʰ/ to IPA|/h/ and IPA|/x/ (the shift of IPA|/k͡xʰ/ to IPA|/x/ is not yet complete).

In certain respects, however, Sesotho is more conservative than other Sotho-Tswana languages. For example, the language still retains the difference in pronunciation between IPA|/ɬ/, IPA|/t͡ɬʰ/, and IPA|/tʰ/.Strictly speaking, IPA|/t͡ɬʰ/ should be an allophone of IPA|/ɬ/ found only when IPA|/ɬ/ is nasalized. However, possibly due to the mixed origins of Sesotho, there are several instances of IPA|/t͡ɬʰ/ appearing without nasalization (as is the case in Setswana) or of IPA|/ɬ/ failing to nasalize when the nasalizing consonant is not visible (such as when forming polysyllabic class 9 nouns).

Thus one finds:: H:title| [hʊɬɑhɑ] |"ho hlaha"|dotted=no to emerge/be born ⇒ class 9 H:title| [t͡ɬʰɑhɔ] |"tlhaho"|dotted=no nature: H:title| [hʊɬɔm̩pʰɑ] |"ho hlompha"|dotted=no to respect/honour ⇒ class 9 H:title| [ɬɔm̩pʰɔ] |"hlompho"|dotted=no respectwhere the nasalization is applied in the first noun but not the second.] Many other Sotho-Tswana languages have lost the fricative IPA|/ɬ/, and some Northern-Sotho languages, possibly influenced by Tshivenda, have also lost the lateral affricate and pronounce all three historical consonants as IPA|/tʰ/ (they have also lost the distinction between IPA|/t͡ɬ/ and IPA|/t/ — thus, for example, speakers of the Northern Sotho language commonly called Setlokwa call their language "Setokwa").A further collapse occurred in Silozi — which has lost the generally unusual distinction between plain and aspirated consonants. Thus Sesotho IPA|/ɬ/, IPA|/t͡ɬʼ/, IPA|/t͡ɬʰ/, IPA|/tʼ/, and IPA|/tʰ/ all map to the single Silozi phonome IPA|/t/.]

The existence of (lightly) ejective consonants (all unvoiced unaspirated stops) is very strange for a Bantu language and is thought to be due to Khoisan influence. These consonants occur in the Sotho-Tswana and Nguni languages (being over four times more common in Southern Africa than anywhere else in the world), and the ejective quality is strongest in isiXhosa, which has been greatly influenced by Khoisan phonology.

As with most other Bantu languages, almost all palatal and postalveolar consonants are due to some form of palatalization or other related phenomena which result from a (usually palatal) approximant or vowel being "absorbed" into another consonant (with a possible subsequent nasalization).

The Southern Bantu languages have lost the Bantu distinction between long and short vowels. In Sesotho the long vowels have simply been shortened without any other effects on the syllables; while sequences of two dissimilar vowels have usually resulted in the first vowel being "absorbed" into the preceding consonant, and causing changes such as labialization and palatalization.

As with most Southern African Bantu languages, the "composite" or "secondary" vowels *e and *o have become IPA|/ɛ/ and IPA|/e/, and IPA|/ɔ/ and IPA|/o/. These usually behave as two phonemes (conditioned by vowel harmony), although there are enough exceptions to justify the claim that they have become four separate phonemes in the Sotho-Tswana languages.

Additionally, the first-degree (or "superclose", "heavy") and second-degree vowels have not merged as in many other Bantu languages, resulting in a total of 9 phonemic vowels.

Uniquely among the Sotho-Tswana languages, Sesotho has adopted a click sound that is pronounced with three accompaniments (tenuis, aspirated, and nasalized). It most probably came with loanwords from the Khoisan and Nguni languages, though it also exists in various words which don't exist in these languages and in various ideophones.

This click also appears in certain situations which are rare or non-existent in the Nguni and Khoisan languages, such as a syllabic nasal followed by a nasalized click (H:title| [ŋ̩ǃn] |"nnq"|dotted=no in H:title| [ŋ̩ǃnɑnɪ] |"nnqane"|dotted=no that other side), a syllabic nasal followed by a tenuis click (also written H:title| [ŋ̩ǃ] |"nq"|dotted=no in H:title| [sɪŋ̩ǃɑŋ̩ǃɑnɪ] |"senqanqane"|dotted=no frog; this is not the same as the prenasalized radical click written "nkq" in the Nguni languages),what and a syllabic nasal followed by an aspirated click (H:title| [ŋ̩ǃʰ] |"nqh"|dotted=no in H:title| [sɪǃʰɪŋ̩ǃʰɑ] |"seqhenqha"|dotted=no hunk).


Sesotho has a large inventory of vowels compared with many other Bantu languages. However, the nine phonemic vowels are collapsed into only five letters in the Sesotho orthography. The two close vowels "i" and "u" (sometimes called "superclose" or "first-degree" by Bantuists) are very high (with ATR) and are better approximated by French vowels than English vowels.

VowelsNote that the IPA symbols used for the near-close vowels in this and related articles are different from those often used in the literature. Often the symbols IPA|/ɨ/ and IPA|/ʉ/ are used instead of the standard IPA|/ɪ/ and IPA|/ʊ/, but these two symbols represent the close central unrounded vowel and the close central rounded vowel respectively in the modern IPA.]

Sesotho possesses four simple nasal consonants. All of these can be syllabic and the syllabic velar nasal may also appear at the end of words.

There is one trill consonant. Originally, this was an alveolar rolled lingual, but today most individuals pronounce it at the back of the tongue, usually at the uvular position. The uvular pronunciation is largely attributed to the influence of French missionaries at Morija in Lesotho. Just like the French version, the position of this consonant is somewhat unstable and often varies even in individuals, but it generally differs from the "r"'s of most other South African language communities. The most stereotypical French-like pronunciations are found in certain rural areas of Lesotho, as well as some areas of Soweto (where this has had an impact on the pronunciation of Tsotsitaal).

The following heterorganic compounds occur. They are often substituted with other consonants, although there are a few instances when some of them are phonemic and not just allophonic. These are not considered consonant clusters.

In non-standard speech these may be pronounced in a variety of ways. "bj" may be pronounced IPA|/bj/ (followed by a palatal glide) and "pj" may be pronounced IPA|/pjʼ/. "pj" may also sometimes be pronounced IPA|/ptʃʼ/, which may alternatively be written "ptj", though this is not to be considered standard.

yllable structure

Sesotho syllables tend to be open, with syllabic nasals and the syllabic approximant "l" also allowed. Unlike almost all other Bantu languages, Sesotho does not have prenasalized consonants (NC).

#The onset may be any consonant (C), a labialized consonant (Cw), an approximant (A), or a vowel (V).
#The nucleus may be a vowel, a syllabic nasal (N), or the syllabic "l" (L).
#No codas are allowed.

The possible syllables are:
*V H:title| [hʊ'et͡sʼɑ] |"ho etsa"|dotted=no to do
*CV H:title| [fi] |"fi!"|dotted=no ideophone of sudden darkness
*CwV H:title| [hʊt͡sʼʷɑ] |"ho tswa"|dotted=no to emerge
*AV H:title| [wɛnɑ] |"wena"|dotted=no you
*N H:title| [n̩nɑ] |"nna"|dotted=no I
*L H:title| [lɪbʊl̩lɔ] |"lebollo"|dotted=no circumcision as part of male initiationNote that heterorganic compounds count as single consonants, not consonant clusters.

Additionally, the following phonotactic restrictions apply:
#A consonant may not be followed by the palatal approximant H:title|/j/|"y"|dotted=no (i.e. Cy is not a valid onset).Historically, in various Bantu languages, this has resulted in palatalization (giving the postalveolar and palatal consonants) and the alveolar fricative H:title|/s/|"s"|dotted=no.]
#The labio-velar approximant H:title|/w/|"w"|dotted=no (or a labialized consonant) may not followed by a back vowel at any time.

Syllabic "l" occurs only due to a vowel being elided between two "l"'s:: H:title| [mʊlɪlɔ] |*"molelo"|dotted=no (Proto-Bantu *mu-dido) ⇒ H:title| [mʊl̩lɔ] |"mollo"|dotted=no fire (cf Setswana "molelo", isiZulu "umlilo"): H:title| [hʊlɪlɑ] |*"ho lela"|dotted=no (Proto-Bantu *-dida) ⇒ H:title| [hʊl̩lɑ] |"ho lla"|dotted=no to cry (cf Setswana "go lela", isiXhosa "ukulila", Tshivenda "u lila"): isiZulu "ukuphuma" to emerge ⇒ "ukuphumelela" to succeed ⇒ Sesotho H:title| [hʊpʰʊmɛl̩lɑ] |"ho phomella"|dotted=no

There are no contrastive long vowels in Sesotho, the rule being that juxtaposed vowels form separate syllables (which may sound like long vowels with undulating tones during natural fast speech).This is not to say that the glottal stop is part of the phoneme inventory of Sesotho, nor is it correct to say that the language has diphthongs or triphthongs (or even longer: H:title| [hɑ'ʊ'ɑ'iˌ'ut͡ɬʼʷɑ] |"ha o a e utlwa"|dotted=no You did not hear it). Sequences of vowels may be pronounced with (thus they are not diphthongs), but in fast speech they may simply flow into each other (thus the glottal stop is not contrastive phoneme).] Originally there might have been a consonant between vowels which was eventually elided that prevented coalescence or other phonological processes (Proto-Bantu *g, and sometimes *j).

Other Bantu languages have rules against vowel juxtaposition, often inserting an intermediate approximant if necessary.: Sesotho [Gauteng|H:title| [xɑ'utʼeŋ̩] |"Gauteng"|dotted=no] ⇒ isiXhosa "Erhawudeni"

Phonetic processes

Vowels and consonants very often influence one another resulting in predictable sound changes. Most of these changes are either vowels changing vowels, nasals changing consonants, or approximants changing consonants. The sound changes are nasalization, palatalization, alveolarization, velarization, vowel elision, vowel raising, and labialization. Sesotho nasalization and vowel-raising are extra-strange since, unlike most processes in most languages, they actually "decrease" the sonority of the phonemes.

  • Nasalization (alternatively Nasal permutation or Strengthening) is a process in Bantu languages by which, in certain circumstances, a prefixed nasal becomes assimilated to a succeeding consonant and causes changes in the form of the phone to which it is prefixed. In the Sesotho language series of articles it is indicated by " [N] "."

    In Sesotho it is a fortition process and usually occurs in the formation of class 9 and 10 nouns, in the use of the objectival concord of the first person singular, in the use of the adjectival and enumerative concords of some noun classes, and in the forming of reflexive verbs (with the reflexive prefix).

    "Very roughly speaking", voiced consonants become devoiced and fricatives (except H:title|/x/|"kg"|dotted=noHistorically H:title|/x/|"kg"|dotted=no was an affricate IPA|/k͡xʰ/ (this still appears as a variation) and was therefore not an exception.

    Some individuals nasalize H:title|/x/|"kg"|dotted=no and H:title|/h/|"h"|dotted=no to H:title|/kʰ/|"kh"|dotted=no (possibly by analogy with the Setswana "hu" nasalizing to "khu") and sometimes even H:title|/kʼ/|"k"|dotted=no (perhaps due to the unstable nature of the voiced H:title|/ɦ/|"h"|dotted=no, which is barely audible and may cause the syllable to sound as if it does not have an onset). Though this is certainly not to be considered standard, it is an understandable reaction to the frication ("weakening") of the affricate IPA|/k͡xʰ/.] ) lose their fricative quality.

    • Vowels and the approximant H:title|/w/|"w"|dotted=no get a H:title|/kʼ/|"k"|dotted=no in front of themStrangely, there are no polysyllabic verbs beginning with H:title|/j/|"y"|dotted=no. The verb H:title| [jɑ] |"-ya"|dotted=no cannot be used with an objectival concord (it may have an intransitive, locative, or instrumental import and an idiomatic passive, but is not transitive) and the approximant is removed in verbal derivations. There are also no adjectives beginning with H:title|/y/|"y"|dotted=no or any other parts of speech which may be nasalized, so there are no instances of H:title|/j/|"y"|dotted=no being nasalized.

      Note that if a H:title|/j/|"y"|dotted=no were to nasalize by getting a H:title|/kʼ/|"k"|dotted=no in front of it, the phonotactic restrictions and phonetic rules of the language would not allow the combination *"ky". In Silozi, which has many verbs commencing with "y" (many of which correspond to Sesotho vowel verbs), nasalization of "y" results in "c" (IPA|/t͡ʃ/), which has collapsed from original Sotho-Tswana H:title|/ʒ/|"j"|dotted=no, H:title|/t͡ʃʼ/|"tj"|dotted=no, and H:title|/t͡ʃʰ/|"tjh"|dotted=no. Since nasalization removes voicing and frication (and Sesotho palatalization preserves aspiration), one may then deduce that if Sesotho H:title|/j/|"y"|dotted=no were to nasalize it would most probably become H:title|/t͡ʃʼ/|"tj"|dotted=no.]
    • Voiced plosives become ejective:: H:title|/b/|"b"|dotted=noH:title|/pʼ/|"p"|dotted=no: H:title|/l/|"l / d"|dotted=noH:title|/tʼ/|"t"|dotted=no
    • Fricatives become aspirated:: H:title|/f/|"f"|dotted=noH:title|/pʰ/|"ph"|dotted=no: H:title|/ʀ/|"r"|dotted=noH:title|/tʰ/|"th"|dotted=no: H:title|/s/|"s"|dotted=noH:title|/t͡sʰ/|"tsh"|dotted=no: H:title|/ʃ/|"sh"|dotted=noH:title|/t͡ʃʰ/|"tjh"|dotted=no: H:title|/ɬ/|"hl"|dotted=noH:title|/t͡ɬʰ/|"tlh"|dotted=no (except for adjectives)
    • H:title|/h/|"h"|dotted=no becomes H:title|/x/|"kg"|dotted=no
    • H:title|/ʒ/|"j"|dotted=no becomes H:title|/t͡ʃʼ/|"tj"|dotted=no.
    The syllabic nasal causing the change is usually dropped, except for monosyllabic stems and the first person objectival concord. Reflexive verbs don't show a nasal.

    : H:title| [hʊ'ɑʀbɑ] |"ho araba"|dotted=no to answer ⇒ H:title| [kʼɑʀɑbɔ] |"karabo"|dotted=no response, H:title| [hʊŋ̩kʼɑʀɑbɑ] |"ho nkaraba"|dotted=no to answer me, and H:title| [huˌ'ikʼɑʀɑbɑ] |"ho ikaraba"|dotted=no to answer oneself: H:title| [hʊfɑ] |"ho fa"|dotted=no to give ⇒ H:title| [m̩pʰɔ] |"mpho"|dotted=no gift, H:title| [hʊm̩pʰɑ] |"ho mpha"|dotted=no to give me, and H:title| [huˌ'ipʰɑ] |"ho ipha"|dotted=no to give oneself

    Other changes may occur due to contractions in verb derivations:: H:title| [hʊbɔnɑ] |"ho bona"|dotted=no to see ⇒ H:title| [hʊbon̩t͡sʰɑ] |"ho bontsha"|dotted=no to cause to see (causative H:title| [bɔn] |"-bon-"|dotted=no + H:title| [isɑ] |"-isa"|dotted=no)

    Nasal homogeneity consists of two points:
    #When a consonant is preceded by a (visible or invisible) nasal it will undergo nasalization, if it supports it.
    #When a nasal is immediately followed by another consonant with no vowel betwixt them, the nasal will change to a nasal in the same approximate position as the following consonant, after the consonant has undergone nasal permutation. If the consonant is already a nasal then the previous nasal will simply change to the same.

  • Palatalization is a process in certain Bantu languages where a consonant becomes a palatal consonant.

    In Sesotho it usually occurs with the short form of passive verbs and the diminutives of nouns, adjectives, and relatives.

    • Labials:: H:title|/pʼ/|"p"|dotted=noH:title|/pʃʼ/|"pj"|dotted=no / H:title|/t͡ʃʼ/|"tj"|dotted=no: H:title|/pʰ/|"ph"|dotted=noH:title|/pʃʰ/|"pjh"|dotted=no / H:title|/t͡ʃʰ/|"tjh"|dotted=no: H:title|/b/|"b"|dotted=noH:title|/bʒ/|"bj"|dotted=no / H:title|/ʒ/|"j"|dotted=no: H:title|/f/|"f"|dotted=noH:title|/fʃ/|"fj"|dotted=no / H:title|/ʃ/|"sh"|dotted=no
    • Alveolars:: H:title|/tʼ/|"t"|dotted=noH:title|/t͡ʃʼ/|"tj"|dotted=no: H:title|/tʰ/|"th"|dotted=noH:title|/t͡ʃʰ/|"tjh"|dotted=no: H:title|/l/|"l"|dotted=noH:title|/ʒ/|"j"|dotted=no
    • The nasals become H:title|/ɲ/|"ny"|dotted=no:: H:title|/n/|"n"|dotted=no, H:title|/m/|"m"|dotted=no, and H:title|/ŋ/|"ng"|dotted=noH:title|/ɲ/|"ny"|dotted=no
    For example:: H:title| [hʊlɪfɑ] |"ho lefa"|dotted=no to pay ⇒ H:title| [hʊlɪfʃʷɑ] |"ho lefjwa"|dotted=no / H:title| [hʊlɪʃʷɑ] |"ho leshwa"|dotted=no to be paid
  • Alveolarization is a process whereby a consonant becomes an alveolar consonant. It occurs in noun diminutives, the diminutives of colour adjectives, and in the pronouns and concords of noun classes with a H:title| [di] |"di-"|dotted=no or H:title| [di] |"di [N] -"|dotted=no prefix. It results in either H:title|/t͡sʼ/|"ts"|dotted=no or H:title|/t͡sʰ/|"tsh"|dotted=no.

    *H:title|/pʼ/|"p"|dotted=no, H:title|/b/|"b"|dotted=no, and H:title|/l/|"l / d"|dotted=no become H:title|/t͡sʼ/|"ts"|dotted=no
    *H:title|/pʰ/|"ph"|dotted=no, H:title|/f/|"f"|dotted=no, and H:title|/ʀ/|"r"|dotted=no become H:title|/t͡sʰ/|"tsh"|dotted=no

    Examples:: H:title| [xʷɑdi] |"-kgwadi"|dotted=no black with white spots ⇒ H:title| [xʷɑt͡sʼɑnɑ] |"-kgwatsana"|dotted=no (dim.): H:title| [dikʼet͡sʼɔ t͡sʼɑhɑ'ʊ] |"diketso tsa hao"|dotted=no your actions

    Other changes may occur due to phonological interactions in verbal derivatives:: H:title| [hʊbʊt͡sʼɑ] |"ho botsa"|dotted=no to ask ⇒ H:title| [hʊbʊt͡sʼet͡sʼɑ] |"ho botsetsa"|dotted=no to ask on behalf of (applied H:title| [bʊt͡sʼ] |"-bots-"|dotted=no + H:title| [ɛlɑ] |"-ela"|dotted=no)

    The alveolarization which changes Sesotho H:title|/l/|"l / d"|dotted=no to H:title|/t͡sʼ/|"ts"|dotted=no is by far the most commonly applied phonetic process in the language. It's regularly applied in the formation of some class 8 and 10 concords and in numerous verbal derivatives.

  • Velarization in Sesotho is a process whereby certain sounds become velar consonants due to the intrusion of an approximant. It occurs with verb passives, noun diminutives, the diminutives of relatives, and the formation of some class 1 and 3 prefixes.

    *H:title|/m/|"m"|dotted=no becomes H:title|/ŋ/|"ng"|dotted=no
    *H:title|/ɲ/|"ny"|dotted=no becomes H:title|/ŋ̩ŋ/|"nng"|dotted=noThis second change is very strange and does not occur in most other major Sotho-Tswana languages.]

    For example:: H:title| [hʊsɪɲɑ] |"ho senya"|dotted=no to destroy ⇒ H:title| [hʊsɪŋ̩ŋʷɑ] |"ho senngwa"|dotted=no to be destroyed (short passive H:title| [sɪɲ] |"-seny-"|dotted=no + H:title| [wɑ] |"-wa"|dotted=no): Class 1 H:title| [mʊ] |"mo-"|dotted=no + H:title| [ɑhɑ] |"-aha"|dotted=noH:title| [ŋʷɑhɑ] |"ngwaha"|dotted=no year (cf Kiswahili "mwaka"; from Proto-Bantu *-jaka)

  • Elision of vowels occurs in Sesotho less often than in those Bantu languages which have vowel "pre-prefixes" before the noun class prefixes (such as isiZulu), but there are still instances where it regularly and actively occurs.

    There are two primary types of regular vowel elision:
    #The vowels IPA|/ɪ/, IPA|/ɛ/, and IPA|/ʊ/ may be removed from between two H:title|/l/|"l"|dotted=no's, thereby causing the first H:title|/l/|"l"|dotted=no to become syllabic. This actively occurs with verbs, and has historically occurred with some nouns.
    #When forming class 1 or 3 nouns from noun stems beginning with IPA|/b/ the middle IPA|/ʊ/ is removed and the IPA|/b/ is contracted into the IPA|/m/, resulting in H:title| [m̩m] |"mm"|dotted=no. This actively occurs with nouns derived from verbs commencing with H:title| [b] |"b"|dotted=no and has historically occurred with many other nouns.

    For example:: H:title| [bɑlɑ] |"-bala"|dotted=no read ⇒ H:title| [bɑl̩lɑ] |"-balla"|dotted=no (applied verb suffix H:title| [ɛlɑ] |"-ela"|dotted=no) read for, and H:title| [m̩mɑdi] |"mmadi"|dotted=no person who reads

  • Vowel raising is an uncommon form of vowel harmony where a non-open vowel (i.e. any vowel other than IPA|/ɑ/) is raised in position by a following vowel (in the same phonological word) at a higher position. The first variety — in which the open-mid vowels become close-mid — is commonly found in most Southern African Bantu languages (where the Proto-Bantu "mixed" vowels have separated). In the 9-vowel Sotho-Tswana languages, a much less common process also occurs where the near-close vowels become raised to a position slightly lower than the close vowels (closer to the English beat and boot than the very high Sesotho vowels "i" and "u") without ATR (or, alternatively, with both [+ATR] "and" [+RTR] ).

    • Mid vowel raising is a process where IPA|/ɛ/ becomes IPA|/e/ and IPA|/ɔ/ becomes IPA|/o/ under the influence of close vowels or consonants that contain "hidden" close vowels.

      : "ho tsheha" to laugh (IPA| [hʊt͡sʰɛhɑ] ) ⇒ "ho tshehisa" to cause to laugh (IPA| [hʊt͡sʰehisɑ] ): "ke a bona" I see (IPA| [kʼɪ'ɑbɔnɑ] ) ⇒ "ke bone" I saw (IPA| [kʼɪbonɪ] ): "ho kena" to enter (IPA| [hʊkʼɛnɑ] ) ⇒ "ho kenya" to insert (IPA| [hʊkʼeɲɑ] )

      These changes are usually recursive to varying depths within the word, though, being a left spreading rule, it is often bounded by the difficulty of "foreseeing" the raising syllable:: "diphoofolo" animals (IPA| [dipʰɔ'ɔfɔlɔ] ) ⇒ "diphoofolong" by the animals (IPA| [dipʰɔ'ɔfoloŋ̩] )
      Additionally, a right-spreading form occurs when a close-mid vowel is on the penultimate syllable (that is, the stressed syllable) and, due to some inflection or derivational process, is followed by an open-mid vowel. In this case the vowel on the final syllable is raised. This does not happen if the penultimate syllable is close (IPA|/i/ or (IPA|/u/).

      : "-besa" roast IPA| [besɑ] ⇒ subjunctive "ke bese" so I may roast... IPA| [kʼɪbese] but: "-thola" find IPA| [tʰɔlɑ] ⇒ subjunctive "ke thole" so I may find... IPA| [kʼɪtʰɔlɛ]
      These vowels can occur phonemically, however, and may thus be considered to be separate phonemes:: "maele" wisdom IPA| [mɑ'ele] : "ho retla" to dismantle/mutilate IPA| [hʊʀet͡ɬʼɑ]

    • Close vowel raising is a process which occurs under much less common circumstances. Near-close IPA|/ɪ/ becomes IPA| [iˌ] and near-close IPA|/ʊ/ becomes IPA| [uˌ] The symbols used in this and related articles for the raised allophones of the near-close vowels are non-standard, though there really aren't any standard alternatives...

      The difficulty lies in acknowledging the role of ATR in this process. In the past, when they were recognised at all, they were often viewed as simply an extra vowel height, and the choice of symbols differed between authors since standard IPA does not recognise the possibility of so many contrastive close vowel heights.] when immediately followed by a syllable containing the close vowels H:title|/i/|"i"|dotted=no or H:title|/u/|"u"|dotted=no. Unlike the mid vowel raising this processes is not iterative and is only caused directly by the close vowels (it cannot be caused by any hidden vowels or by other raised vowels).

      : H:title| [hʊt͡sʰɛlɑ] |"ho tshela"|dotted=no to pass over ⇒ H:title| [hʊt͡sʰiˌdisɑ] |"ho tshedisa"|dotted=no to comfort: H:title| [hʊlʊmɑ] |"ho loma"|dotted=no to itch ⇒ H:title| [sɪluˌmi] |"selomi"|dotted=no period painsSince these changes are allophonic, the Sotho-Tswana languages are rarely said to have 11 vowels.

  • Labialization is a modification of a consonant due to the action of a bilabial IPA|/w/ element which persists throughout the articulation of the consonant and is not merely a following semivowel. This labialization results in the consonant being pronounced with rounded lipsIn Sesotho, when a consonant is followed by a vowel, the shape of the lips is changed to resemble the shape of the vowel while the consonant is being pronounced (or even before, when the syllable is the first after a pause) with the shaping being more severe the higher the vowel height. Thus, when a consonant is followed by a back vowel the lips are rounded when pronouncing the consonant, and the lips are spread when pronouncing a consonant followed by a front vowel. Labialization may be explained by saying that, for some reason, the lips are rounded in anticipation of a back vowel that is never pronounced.

    This also explains why labialization disappears before back vowels. Since the lips will already be rounded anyway in anticipation of the following vowel, there is no way to distinguish between a labialized consonant before a back vowel and a normal consonant before a back vowel (this is similar to the situation in English where IPA|/ʍ/ — written as "wh" — is pronounced as IPA|/h/ in words such as "whom", "whole", and "whore").

    Note that it is also possible for labialization to simply disappear, even if any other modification of the consonant caused as a side-effect of labialization remains. One example is the tentative evolution of modern Sesotho H:title| [ɲ̩t͡ʃʼɑ] |"ntja"|dotted=no (dog) from Proto-Bantu *N-bua:: Proto-Bantu *N-bua ⇒ (nasal homogeneity) *IPA|m̩bua ⇒ (labialization) *IPA|m̩bʷa ⇒ (palatalization) *IPA|m̩pʃʷa ⇒ (loss of labialization + gaining of ejective quality) *IPA|m̩pʃʼa (as found in Northern Sotho) ⇒ (heterorganic simplification + nasal homogeneity) modern IPA| [ɲ̩t͡ʃʼɑ] ] (but, in Sesotho, with no velarization) and with attenuated high frequencies (especially noticeable with fricatives and aspirated consonants).

    It may be traced to an original IPA|/ʊ/ or IPA|/u/ being "absorbed" into the preceding consonant when the syllable is followed by another vowel. The consonant is labialized and the transition from the labialized syllable onset to the nucleus vowel sounds like a bilabial semivowel (or, alternatively, like a diphthong). Unlike in languages such as Chishona and Tshivenda, Sesotho labialization does not result in "whistling" of any consonants.

    Almost all consonants may be labialized (indicated in the orthography by following the symbol with "w"), the exceptions being labial plosives and fricatives (which become palatalized), the bilabial and palatal nasals (which become velarized), and the voiced alveolar IPA| [d] allophone of IPA|/l/ (which would become alveolarized instead). Additionally, syllabic nasals (where nasalization results in a labialized H:title| [ŋ̩kʼ] |"nk"|dotted=no instead) and the syllabic H:title|/l/|"l"|dotted=no (which is always followed by the non-syllabic H:title|/l/|"l"|dotted=no) are never directly labialized. Note that the unvoiced heterorganic doubled articulant fricative H:title|/fʃ/|"fj"|dotted=no only occurs labialized (only as H:title|/fʃʷ/|"fjw"|dotted=no).

    Due to the inherent bilabial semivowel, labialized consonants never appear before back vowels:: H:title| [hʊlɑt͡sʼʷɑ] |"ho latswa"|dotted=no to taste ⇒ H:title| [tʼɑt͡sʼɔ] |"tatso"|dotted=no flavour: H:title| [hʊt͡sʼʷɑ] |"ho tswa"|dotted=no to emerge ⇒ H:title| [lɪt͡sʼɔ] |"letso"|dotted=no (in grammar) a derivation: H:title| [hʊnʷɑ] |"ho nwa"|dotted=no to drink ⇒ H:title| [sɪnɔ] |"seno"|dotted=no a beverage: H:title| [hʊ'ɛlɛl̩lʷɑ] |"ho elellwa"|dotted=no to realise ⇒ H:title| [kʼɛlɛl̩lɔ] |"kelello"|dotted=no the mind


Sesotho is a tonal language spoken using two contrasting tones: low and high; further investigation reveals, however, that in reality it is only the high tones that are explicitly specified on the syllables in the speaker's mental lexicon, and that low tones appear when a syllable is tonally under-specified. Unlike the tonal systems of languages such as Mandarin, where each syllable basically has an immutable tone, the tonal systems of the Niger-Congo languages are much more complex in that several "tonal rules" are used to manipulate the underlying high tones before the words may be spoken, and this includes special rules ("melodies") which, like grammatical or syntax rules that operate on words and morphemes, may change the tones of specific words depending on the meaning one wishes to convey.


The word stress system of Sesotho (often called "penultimate lengthening" instead, though there are certain situations where it doesn't fall on the penultimate syllable) is quite simple. Each complete Sesotho word has exactly one main stressed syllable.

Except for the second form of the first demonstrative pronoun, certain formations involving certain enclitics, polysyllabic ideophones, most compounds, and a handful of other words, there is only one main stress falling on the penult.

The stressed syllable is slightly longer and has a falling tone. Unlike in English, stress does not affect vowel quality or height.

This type of stress system occurs in most of those Eastern and Southern Bantu languages which have lost contrastive vowel length.

The second form of the first demonstrative pronoun has the stress on the final syllable. Some proclitics can leave the stress of the original word in place, causing the resultant word to have the stress at the antepenultimate syllable (or even earlier, if the enclitics are compounded). Ideophones, which tend to not obey the phonetic laws which the rest of the language abides by, may also have irregular stress.

There is even at least one minimal pair: the adverb H:title| [fɛlɑ] |"fela"|dotted=no (only) has regular stress, while the conjunctive H:title| [fɛlɑ] |"fela"|dotted=no (but) (like many other conjunctives) has stress on the final syllable. This is certainly not enough evidence to justify making the claim that Sesotho is a stress accent language, though.

Because the stress falls on the penultimate syllable, Sesotho, like other Bantu languages (and unlike many closely allied Niger-Congo languages), tends to avoid monosyllabic words and often employs certain prefixes and suffixes to make the word disyllabic (such as the syllabic nasal in front of class 9 nouns with monosyllabic stems, etc).



*Clements, G.N, and Rialland, A. 2005. "Africa as a Phonological Area". In Bernd Heine & Derek Nurse (eds), Africa as a Linguistic Area. Cambridge: Cambridge University Press.
*Dichabe, S. B. 1997. "Advanced Tongue Root Harmony in Setswana". M.A. thesis. University of Ottawa. ISBN 0 612 20913 X.
*Doke, C. M., and Mofokeng, S. M. 1974. "Textbook of Southern Sotho Grammar". Cape Town: Longman Southern Africa, 3rd. impression. ISBN 0 582 61700 6.
*Hyman, L. M. 2003. "Segmental phonology". In D. Nurse & G. Philippson (eds.), The Bantu languages, pp. 42-58. London: Routledge/Curzon.
*Schadeberg, T.C. 1994-5. "Spirantization and the 7-to-5 Vowel Merger in Bantu". In Marc Dominicy & Didier Demolin (eds), Sound Change. Belgian Journal of Linguistics, 73-84.

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