In linguistic typology, transitive alignment is a type of morphosyntactic alignment used in a small number of languages in which a single grammatical case is used to mark both arguments of a transitive verb, but not with the single argument of an intransitive verb.
Such a situation, which is quite rare among the world's languages, has also been called a double-oblique clause structure.
In the present tense, the object of the transitive verb is marked, the other two roles are not – that is, a typical nominative–accusative alignment.
The case forms of the object were then leveled, and with the marking applied to the past tense as well.
However, this resulted in a complication, the typologically unusual situation where the agent and object are treated the same, and different from the intransitive subject.