Caus"a*tive (?), a. [L. causativus pertaining to a lawsuit (causa), but in the English sense from E. cause.] 1. Effective, as a cause or agent; causing.

Causative in nature of a number of effects.
Bacon.

2. Expressing a cause or reason; causal; as, the ablative is a causative case.

Caus"a*tive (k&add;"z&adot;*t&ibreve;v), n. A word which expresses or suggests a cause.