questionable Synonyms

confutable suspicious uncertain refutable doubtful problematical debatable disputable uncredible unlikely opposable unreliable unreputable unsound vague unassured trustless problematic questionably shady shaky strange sub judice suspect suspecter tenuous testable unsettled undecided unsure in doubt in question unprovable unsafe unconvinced unconvincing unreproducible unsubstantiated untrusty iffy unsupported untrustworthy ambivalent dodgy borderline unverified unbelievable unconfirmed unresolved chancy