endless

1 being or seeming to be without limits from the promontory visitors can look out over an endless sea Synonyms bottomless, boundless, infinite, fathomless, horizonless, illimitable, immeasurable, immensurable, indefinite, limitless, measureless, unbounded, unfathomable, unlimitedRelated Words abysmal; countless, incalculable, incomputable, inestimable, innumerable, unmeasured; exhaustless, inexhaustible; extensive, far-flung, immense, vastNear Antonyms fathomable, measurable; depthless, shallow, superficialAntonyms bounded, circumscribed, confined, definite, finite, limited, restricted

2 lasting forever the endless roar is what I remember most about Niagara Falls Synonyms ceaseless, dateless, deathless, everlasting, 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