from Latin causa 1) v. to make something happen. 2) n. the reason something happens. A cause implies what is called a "causal connection" as distinguished from events which may occur but do not have any effect on later events. Example: While driving his convertible, Johnny Youngblood begins to stare at pretty Sally Golightly, who is standing on the sidewalk. While so distracted he veers into a car parked at the curb. Johnny's inattention (negligence) is the cause of the accident, and neither Sally nor her beauty is the cause. 3) n. short for cause of action.