Definition of impish adjective from the Oxford Advanced American Dictionary

     

    impish

     adjective
    adjective
    NAmE//ˈɪmpɪʃ//
     
     
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  1. 1showing a lack of respect for someone or something in a way that is amusing rather than serious synonym mischievous
  2. 2 an impish grin/look He takes an impish delight in shocking the press. see also imp
 
adverb to grin/smile impishly
See the Oxford Advanced Learner's Dictionary entry: impish