Factitive is a word used to describe a grammatical construction whereby a verb is used to indicate that the subject has caused an action to occur. Some synonyms for this word include causative, agentive, and transitive. The causative form of a verb expresses the action of causing something to happen. The agentive form pertains to the subject that causes an action to occur, while the transitive form denotes an action that involves a direct object. Other synonyms for factitive include productive, generative, and formative. These words all relate to the idea of causing something to happen or formulating an action or process.