pre·pos·ter·ous /prɪˈpɒstərəs $ -ˈpɑːs-/ adjectiveadj formalSTUPID/NOT SENSIBLEcompletely unreasonable or silly 荒唐的,荒谬绝伦的 SYN absurdThe whole idea sounds absolutely preposterous! 整个想法听起来荒谬透顶!
—preposterously adverbadv
—preposterousness noun [uncountableU]