perpetual

1 going on and on without any interruptions the perpetual rise and fall of the sea Synonyms ceaseless, continual, continued, continuing, incessant, nonstop, continuous, running, unbroken, unceasing, uninterrupted, unremittingRelated Words dateless, deathless, endless, eternal, everlasting, immortal, interminable, permanent, undying, unending; changeless, constant, stable, steady, unchanging, unvarying; durable, enduring, lasting, persistent; imperishable, indestructibleNear Antonyms intermittent, periodic, periodical, recurrent, recurring; alternate, alternating, cyclic (or cyclical), rhythmic (or rhythmical), seasonal, serial; erratic, fitful, irregular, occasional, spasmodic, sporadic, spotty, unsteadyAntonyms discontinuous, noncontinuous

2 having an existence or validity that does not change or diminish freedom of religion is a perpetual right that is guaranteed by the nation's constitution Synonyms ageless, continuing, dateless, enduring, eternal, everlasting, immortal, imperishable, lasting, ongoing, perennial, abiding, timeless, undyingRelated Words ceaseless, endless, permanent; changeless, constant, stable, stationary, steady, unchanging, unvaryingNear Antonyms antiquated, archaic, dated, obsolete, outdated, outmoded, out-of-date, outworn, passé

3 lasting forever an immature jerk who seemed to be in a state of perpetual adolescence Synonyms ceaseless, dateless, deathless, endless, eternal, immortal, permanent, everlasting, undying, unendingRelated Words durable, enduring, lasting, long-lived, persistent, stubborn; imperishable, indefeasible, indefectible, indelible, indestructible, indissoluble, inexpungible; timeless; abiding, stable, standing, steadfast, steady, unfailing, unfaltering; continual, continuing, continuous, incessant, unbroken, unceasing, uninterrupted, unremittingNear Antonyms ephemeral, evanescent, fleeting, fugacious, fugitive, momentary, passing, short-lived, transitory; interim, provisional, short-termAntonyms impermanent, mortal, temporary, transient