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  1. UNCERTAIN Synonyms: 104 Similar and Opposite Words - Merriam-Webster

    Synonyms for UNCERTAIN: volatile, unpredictable, changeful, unstable, inconsistent, variable, unsettled, capricious; Antonyms of UNCERTAIN: certain, constant, stable, predictable, steady, …

  2. UNCERTAIN | English meaning - Cambridge Dictionary

    UNCERTAIN definition: 1. not knowing what to do or believe, or not able to decide about something: 2. not known or…. Learn more.

  3. UNCERTAIN definition in American English | Collins English …

    If something is uncertain, it is not known or definite. How much practical help they can give us is uncertain. It's uncertain whether they will accept the plan.

  4. Uncertain - definition of uncertain by The Free Dictionary

    Define uncertain. uncertain synonyms, uncertain pronunciation, uncertain translation, English dictionary definition of uncertain. adj. 1. Not known or established; questionable: domestic …

  5. uncertain adjective - Definition, pictures, pronunciation and usage ...

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

  6. uncertain - Wiktionary, the free dictionary

    May 5, 2025 · uncertain (comparative more uncertain or (rare) uncertainer, superlative most uncertain or (uncommon) uncertainest) Not certain; unsure.

  7. UNCERTAIN Definition & Meaning | Dictionary.com

    That which is uncertain is doubtful or problematical; it often involves danger through an inability to predict or to place confidence in the unknown: The time of his arrival is uncertain.

  8. Uncertain Definition & Meaning | Britannica Dictionary

    We are still uncertain of the truth. She remains uncertain about her plans. I'm uncertain about how to respond.

  9. UNCERTAIN Definition & Meaning - Merriam-Webster

    The meaning of UNCERTAIN is not known beyond doubt : dubious. How to use uncertain in a sentence.

  10. uncertain: Meaning and Definition of - Infoplease

    not clearly or precisely determined; indefinite; unknown: a manuscript of uncertain origin. vague; indistinct; not perfectly apprehended: an abstruse novel with uncertain themes.