Synonyms of deathless

2 Syllables
yearlong, undying, termless, endless
3 Syllables
perennial, unended, eternal, timeless, immortal, unfading
4 Syllables
sempiternal, measureless, everlasting, phoenixlike
5 Syllables
irrefragable, irrefrangible, self-perpetuating, amaranthine, nonperishable, illimitable, imperishable, indestructible, immortalized
6 Syllables
inexterminable