continual, continuous, constant, incessant, perpetual, perennial mean characterized by continued occurrence or recurrence. continual often implies a close prolonged succession or recurrence.

PERPETUAL definition: continuing or enduring forever; everlasting. See examples of perpetual used in a sentence.

Continually & repeatedly (Definition of perpetual from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

lasting for ever or for a long time; occurring repeatedly over a long time.

Definition of perpetual adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

There are 15 meanings listed in OED's entry for the word perpetual, six of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

lasting for a very long time. continuing without stopping or interrupting: her perpetual whining about her job. Botany (of a plant or flower) blooming throughout the growing season. Botany a perpetual plant. …

Perpetual definition: Lasting forever; never-ending.

Perpetual is an adjective that describes something as never ending, everlasting, or continual. It refers to something that is infinite or indefinitely long in duration, often occurring repeatedly or constantly.

A perpetual act, situation, or state is one that happens again and again and so seems never to end. I thought her perpetual complaints were going to prove too much for me.