Synonyms of everlasting

2 Syllables

yearlong, undying, long-term, diurnal, deathless, brass-bound, brassbound, all-time, termless, constant, boundless, endless, lasting, longterm

3 Syllables

ceaseless, perennial, perpetual, unended, dateless, eternal, longstanding, round-the-clock, aeonian, unwaning, day-and-night, timeless, continual, immortal, shatterproof, perduring, unfading, abiding, limitless, unending, permanent, incessant, unceasing, continuous

4 Syllables

unbreakable, unremitting, around-the-clock, oft-repeated, sempiternal, never-ending, measureless, all-embracing, infrangible, infinite, nonbreakable, never-ceasing, phoenixlike, perdurable

5 Syllables

irrefragable, irrefrangible, self-perpetuating, amaranthine, interminate, nonperishable, supertemporal, illimitable, interminable, imperishable, indestructible, uninterrupted

6 Syllables

inexterminable