a bit thick a bit thin absurd antic barred beguiling bewildering beyond belief closed-out contrary to reason doubtable doubtful dubious dubitable enigmatic exceptional excluded extraordinary fabulous fanciful fantastic fascinating hard of belief hard to believe hopeless implausible impossible incomprehensible inconceivable incredible logically impossible marvelous miraculous not deserving belief not possible open to doubt open to suspicion outlandish oxymoronic paradoxical passing belief passing strange phenomenal preposterous problematic prodigious prohibited puzzling questionable rare remarkable ridiculous ruled-out self-contradictory sensational singular staggering belief strange striking stupendous suspect suspicious tall thick thin unaccountable unbelievable uncommon unconvincing unearthly unexpected ungodly unheard-of unique unknowable unordinary unprecedented unthinkable unusual unwonted unworthy of belief wonderful wondrous