Antonyms of adj undying

1 sense of undying

Sense 1
deathless, undying -- (never dying; "his undying fame")

INDIRECT (VIA immortal) -> mortal -- (subject to death; "mortal beings")

Similarity of adj undying

1 sense of undying

Sense 1
deathless, undying -- (never dying; "his undying fame")
       => immortal (vs. mortal) -- (not subject to death)