credible Antonyms

incredible unconceivable uncredible underhanded undreamed undreamt unlikely unreasonable unreliable unsound retrospective trustless treacherous scheming shady shifty slippery specious squinter suspect tall untrustworthy duplicitous undoable unimagined unsustainable untrusty wild-eyed absolutely impossible be of no value be worthless extremely difficult to believe undependable unconvincing nonrational unbelievable unthinkable beyond belief amazeballs away with the fairies butter wouldn't melt in someone's mouth without a doubt noncredible extremely unlikely questionable abnormal deceptive demented derisory dishonest