—n. 1. something that causes a person to act in a certain way, do a certain thing, etc.; incentive.
2. the goal or object of a person's actions: Her motive was revenge. 3. (in art, literature, and music) a motif.
—adj. 1. causing, or tending to cause, motion.
2. pertaining to motion.
3. prompting to action.
4. constituting a motive or motives.