Synonyms for doubt

noun

1. Questioning

   distrust, mistrust, disbelief, unbelief, suspicion, misgiving, skepticism, reluctance to believe, apprehension, dubiousness, doubtfulness, dubiety, agnosticism, incredulity, faithlessness, lack of faith, want of faith, lack of confidence, lack of certainty, jealousy, discredit, rejection; see also uncertainty 1.

   Antonyms faith*, trust, credence.

2. Hesitation arising from uncertainty

   uncertainty, skepticism, scruple, misgiving, qualm, reservation, perplexity, indecision, irresolution, incertitude, hesitancy, suspense, lack of confidence or certainty, dubiety, undecidedness, faltering, vacillation, ambivalence, lack of conviction, ambiguity, dilemma, reluctance, difficulty, apprehension, wavering, demur, demurral, bewilderment, quandary, dubiousness, unsettled opinion, timidity, insecurity, bashfulness, diffidence, feeling of inferiority, inferiority complex; see also uncertainty 2.

   Antonyms belief*, conviction, certainty. See syn. study at uncertainty.uncertainty.

beyond a doubt, without doubt

no doubt

verb

1. To be uncertain

   wonder, question, query, ponder, vacillate, waver, hesitate, be dubious, be undecided, be uncertain, be curious, be puzzled, be doubtful, be in a quandary, demur, hold in doubt, have doubts about, have one's doubts, raise a question, stop to consider, have qualms, have reservations, scruple, call in question, hesitate to accept, hold questionable, greet with skepticism, skepticize, cast doubt upon, have no conception, not know which way to turn, not know what to make of, be of two minds; see also ask 1, question 1.

   Antonyms believe, trust*, confide.

2. To entertain doubt

   suspect, mistrust, distrust, lack confidence in, discredit, give no credence to, not believe, refuse to believe, disbelieve, impugn, dispute, be apprehensive of, be skeptical of, scoff, insinuate, misgive, read somewhat differently, challenge, harbor suspicions, not admit, doubt one's word, smell a rat*, not buy*, take a dim view of*, set no store by*, put no stock in*, take no stock in*; see also deny.

   Antonyms support*, prove, demonstrate.