American English

Definition of opponent noun from the Oxford Advanced American Dictionary



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  1. 1a person that you are playing or fighting against in a game, competition, argument, etc. synonym adversary a political opponent a dangerous/worthy/formidable opponent The team's opponents are unbeaten so far this season.
  2. 2opponent (of something) a person who is against something and tries to change or stop it opponents of abortion opponents of the regime
See the Oxford Advanced Learner's Dictionary entry: opponent