indefinite

1 being or seeming to be without limits the indefinite vastness of the frozen tundra Synonyms bottomless, boundless, endless, fathomless, horizonless, illimitable, immeasurable, immensurable, infinite, 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 not expressed in precise terms an indefinite longing for something new and exciting in her life Synonyms fuzzy, vague, inexplicit, muzzy, unclearRelated Words ambiguous, cryptic, dark, enigmatic (also enigmatical), equivocal, murky, nebulous, obscure, unintelligible; bleary, blurry, dim, faint, foggy, gauzy, hazy, misty, woozy; indeterminate, indistinct, indistinguishable, uncertain, undefinable, undefined, undetermined; inexplicable, inscrutable, mysterious; baffling, bewildering, confounding, confusing, mystifying, obfuscatory, perplexing, puzzling, unfathomableNear Antonyms candid, direct, forthright, foursquare, frank, honest, open, openhearted, outspoken, plainspoken, straight, straightforward, unguarded; obvious, plain, unambiguous, understandable, unequivocal; comprehensible, fathomable, intelligible; defined, distinct, well-defined; blatant, patent, unmistakableAntonyms clear, definite, explicit, specific

3 not seen or understood clearly through the dense fog we could just barely discern the indefinite form of another boat Synonyms blear, bleary, blurry, dim, foggy, fuzzy, gauzy, hazy, faint, indistinct, indistinguishable, misty, murky, nebulous, obscure, opaque, pale, shadowy, unclear, undefined, undetermined, vagueRelated Words dark, dusky, gloomy; impalpable, inappreciable, intangible, invisible; hieroglyphic (also hieroglyphical), incomprehensible, indecipherable, indiscernible, inexplicable, mysterious, obfuscatory, puzzlingNear Antonyms bright, distinct, evident, obvious, plain; certain, firm, strong, sureAntonyms clear, definite, pellucid