CERT Antonyms There are 6 antonyms of the word cert. (opposite meanings)Did you mean?Definition of CERTSynonyms of CERTAlso try opposite words for..certifycertifiedcertifiercertifiescertifiableBest Opposite Words For CERTTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1doubtfuladjectiveadj2dubiousadjectiveadj3hesitantadjectiveadj4questionableadjectiveadj5uncertainadjectiveadj6unsureadjectiveadj Alternatives for DOUBTFUL Words (17)dubioustentativeambiguoushesitantincredulousmistrustfulquestionablescepticalskepticalsuspiciousuncertainundecideduneasyunresolvedunsettledunsuredubitablePhrases (1)in questionOpposite words for doubtful Alternatives for DUBIOUS Words (11)doubtfulambiguoushesitantiffyquestionableskepticalsuspiciousuncertainunclearunsuredubitablePhrases (1)in questionOpposite words for dubious Alternatives for HESITANT Words (19)ambivalentapprehensivecautiousdiffidentdoubtfulfalteringfalteringlyindecisivereluctantshytentativetimorousuncertainunsurevacillatingwaveringworriedvacillatoryhesitatingOpposite words for hesitant Alternatives for QUESTIONABLE Words (3)confutableconfutativerefutableOpposite words for questionable Alternatives for UNCERTAIN Words (19)unsettledunsureambiguousdoubtfulequivocalfalteringhesitantindecisivetentativeunclearundecidedunpredictableunresolvedvacillatingvaguewaveringchangeableincertainunsealedOpposite words for uncertain Alternatives for UNSURE Words (21)uncertainambivalentconfuseddoubtfuldubioushesitantindecisivepuzzledskepticalunclearuncommittedunconvincedundecidedunsurevacillatingwaveringagnosticdiffidentincertainshytimidOpposite words for unsure