Pronunciation: (in-sist'),[key] —v.i. 1. to be emphatic, firm, or resolute on some matter of desire, demand, intention, etc.: He insists on checking every shipment. 2. to lay emphasis in assertion: to insist on the justice of a claim. 3. to dwell with earnestness or emphasis (usually fol. by on or upon): to insist on a point in a discussion.
—v.t. 1. to assert or maintain firmly: He insists that he saw the ghosts. 2. to demand or persist in demanding: I insist that you see this thing through.