Pertaining to a corpse, though having qualities of life. / (horror fiction) Being animate, though non-living.

(horror fiction) Those creatures which are undead; that is, dead yet still animate.

(horror fiction) A creature that is undead; that is, dead but still animate.

The state or condition of being undead.

plural of undead

Not deadened.

The condition of not being susceptible to death; immortality.

Not subject to death; immortal. / Unable to be killed, quenched, or terminated; eternal; everlasting. / Of or pertaining to the undead.

Immortally; eternally.

Not deadly; not causing, producing, or resulting in death; harmless.