- no longer alive but animated by a supernatural force, as a vampire or zombie.
- (used with a plural verb) undead beings collectively (usually preceded by the).
- (of a fictional being, such as a vampire) technically dead but reanimated
- (as collective noun; preceded by the)the undead
adj.“neither dead nor alive,” c.1400, from un- (1) “not” + dead. As a noun meaning “vampires and such,” from 1904.