someone who competes with or fights another in a contest, game, or argument;a rival or adversary 对手;敌手 he beat his Republican opponent by a landslide margin. 他以绝对多数击败了他的共和党对手。 ■a person who disagrees with or resists a proposal or practice 反对者 an opponent of the economic reforms. 经济改革的反对者。
派生 语源
late 16th cent. (denoting a person opening an academic debate by proposing objections to a philosophical or religious thesis): from Latin opponent- 'setting against', from the verb opponere, from ob- 'against' + ponere 'place'