American English

Definition of arch adjective from the Oxford Advanced American Dictionary

     

    arch

     adjective
    adjective
    NAmE//ɑrtʃ//
     
    [usually before noun] (often disapproving)
     
    jump to other results
  1. seeming amused because you know more about a situation than other people an arch tone of voice He tapped the side of his nose in an uncharacteristically arch gesture.
  2. archly adverb
     
    jump to other results
  3. “Guess what?” she said archly.
See the Oxford Advanced Learner's Dictionary entry: arch