ceaseless

1 going on and on without any interruptions there has been ceaseless rain for three days Synonyms continuous, continual, continued, continuing, incessant, nonstop, perpetual, 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 lasting forever promised her ceaseless happiness if she would only marry him Synonyms everlasting, dateless, deathless, endless, eternal, immortal, permanent, perpetual, 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