Synonyms of nonperishable

2 Syllables
undying, deathless
3 Syllables
enduring, durable, perpetual, immortal, unfading, abiding, permanent
4 Syllables
unbreakable, immutable, unchangeable, undestroyable, indelible, everlasting
5 Syllables
irrefragable, unalterable, irrefrangible, indissoluble, inextirpable, incorruptible, imperishable, indestructible
6 Syllables
inexterminable, inextinguishable