Pronunciation: (deth'lis), [key]
1. not subject to death; immortal: the belief that the human soul is deathless.
2. unceasing; perpetual: his deathless devotion to the cause.
3. likely to endure because of superior quality, timelessness, etc. (sometimes used ironically): deathless prose.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.