open to doubt

ambiguous arguable controversial debatable dubious problematic suspicious unproven vague

apocryphal contingent controvertible cryptic disputable dubitable enigmatic equivocal fishy hard to believe hypothetical iffy indecisive indefinite indeterminate moot mysterious obscure occult open to question oracular paradoxical problematical provisional shady suspect unconfirmed undefined under advisement under examination unreliable unsettled

certain clear definite incontrovertible indubious sure trustworthy trusty undoubted unquestionable

indisputable proven

dubious questionable uncertain unsure unusual

borderline debatable different disputable doubtable equivocal farfetched funny irregular not kosher open open to question out of line overt peculiar phony problematic reaching rings untrue shady shaky suspect too much uncommon won't wash

certain clear definite secure sure undoubted

believable indubious innocent palpable trustworthy trusty unquestionable

astonishing implausible impossible improbable inconceivable incredible outlandish preposterous too much unimaginable unthinkable

beyond belief cockamamie cockeyed doubtful dubious far-fetched fishy flaky flimsy for the birds full of holes harebrained incogitable kooky lamebrained past belief phony questionable reaching scatterbrained screwy staggering suspect thick thin unconvincing unsubstantial weak won't hold water won't wash

believable conceivable credible imaginable likely plausible possible reasonable tenable

real

debatable dubious unsupported

arguable controversial disputable doubtful dubitable fishy hard to believe iffy indefinite open to question suspect suspicious uncertain unconfirmed uncorroborated

certain sure