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opponent noun

Click to hear the UK pronunciation of this wordClick to hear the US pronunciation of this word/əˈpəʊ.nənt//-ˈpoʊ-/ n [C]

Definition

a person who disagrees with something and speaks against it or tries to change it
a political opponent
Leading opponents of the proposed cuts in defence spending will meet later today.
a person being competed against in a sports event
In the second game, her opponent hurt her leg and had to retire.

(Definition of opponent noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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