/ay"jeuhn tiv/ , adj. Gram.
1. pertaining to, or productive of, a form that indicates an agent or agency.
2. (in case grammar) pertaining to the semantic role or case of a noun phrase that indicates the volitional or primary causer of the action expressed by a verb.
n.
3. an agentive word or suffix.
4. the agentive case.
[ AGENT + -IVE ]