Definition of pet adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//pet//
; NAmE NAmE//pet//
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  • [only before noun] that you are very interested in his pet subject/theory/project, etc. see also pet name
  • Word Originearly 16th cent. (as a noun; originally Scots and northern English): of unknown origin.Idioms
    somebody’s pet hate (British English) (North American English somebody’s pet peeve)
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    something that you particularly dislike
    See the Oxford Advanced American Dictionary entry: pet