doubtable Synonyms

uncertain open to dispute ridiculous refutable questionable queer problematical problematic obscure negotiable shady shaky speculative unsure debateable iffy dodgy unlikely suspicious suspensive suspect moot issuable doubtful disputed disputable debatable controvertible controversial contestable contentious arguable dubious dubitable insecure indistinct indeterminate indefinite incredible inconclusive improbable fishy equivocal ambiguous