Doubtful

doubt;ful pronunciation: function: adjective date: 14th century 1 : giving rise to doubt : open to question lt;it is doubtful that they ever knew what happenedgt;2 a : lacking a definite opinion, conviction, or determination lt;they were doubtful about the advantages of the new systemgt; b : uncertain in outcome : undecided lt;the outcome of the election remains doubtfulgt;3 : marked by qualities that raise doubts about worth, honesty, or validity lt;of doubtful reputegt;— doubt;ful;ly adverb — doubt;ful;ness noun synonyms doubtful, dubious, problematic, questionable mean not affording assurance of the worth, soundness, or certainty of something. doubtful implies little more than a lack of conviction or certainty lt;doubtful about whether i said the right thinggt;. dubious stresses suspicion, mistrust, or hesitation lt;dubious about the practicality of the schemegt;. problematic applies especially to things whose existence, meaning, fulfillment, or realization is highly uncertain lt;whether the project will ever be finished is problematicgt;. questionable may imply no more than the existence of doubt but usually suggests that the suspicions are well-grounded lt;a man of questionable honestygt;.