PERPETUAL

adj. 1 eternal, infinite, everlasting, never-ending, unending, perennial, ageless, timeless, long-lived, permanent, unceasing, lasting, enduring, unvarying, unchanging, immutable, invariable, undeviating, Literary sempiternal They declared their perpetual love for each other 2 constant, uninterrupted, continuous, unfailing, incessant, persistent, unremitting, unending, non-stop, endless, recurrent, continual, repetitive: Why should we have to listen to the neighbours' perpetual bickering?