Definition of preposterously adverb from the Oxford Advanced Learner's Dictionary

     

    preposterously

     adverb
    adverb
    BrE BrE//prɪˈpɒstərəsli//
     
    ; NAmE NAmE//prɪˈpɑːstərəsli//
     
    (formal)
     
    jump to other results
  1. 1in a way that is completely unreasonable, especially when it is shocking or annoying synonym outrageously a preposterously expensive bottle of wine
  2. 2in a way that is greater than what seems reasonable or appropriate She was relatively poor and he was preposterously rich.