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Definitions of dubious:

adjective:   not convinced
Example: "They admitted the force of my argument but remained dubious"

adjective:   open to doubt or suspicion
Example: "He has a dubious record indeed"

adjective:   fraught with uncertainty or doubt
Example: "Dubious about agreeing to go"

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Alternative Terms
doubtful skeptical uncertain undecided unsure certain-uncertain ambiguous borderline chancy clouded dubitable equivocal inconclusive indecisive indeterminate problematic questionable unclear iffy clear-unclear eellogofusciouhipoppokunurious dubiously sure dubiousness indubious certain palpable convincing doubtless irrefutable undisputed-undisputable actinomadura apparent dogmatic

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