Tripartite language

A tripartite language, also called an ergative-accusative language, is one that treats the subject of an intransitive verb, the subject of a transitive verb, and the object of a transitive verb each in different ways. If the language has morphological case, the arguments are marked in this way:

* the subject of a transitive verb takes the ergative case
* the subject of an intransitive verb takes the intransitive case
* the object of a transitive verb takes the accusative case

Languages lacking case inflections may distinguish these roles with distinct word order.

Tripartite languages are rare. Some examples are Wangkumara, Nez Percé and Kalaw Lagaw Ya. Several constructed languages, especially engineered languages, use a tripartite case system or tripartite adposition system.

ee also

Split ergativity