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Synonyms

opponent

American  
[uh-poh-nuhnt] / əˈpoʊ nənt /

noun

  1. a person who is on an opposing side in a game, contest, controversy, or the like; adversary.

    Synonyms:
    antagonist
    Antonyms:
    friend, ally

adjective

  1. being opposite, as in position.

  2. opposing; adverse; antagonistic.

  3. Anatomy. bringing parts together or into opposition, as a muscle.

opponent British  
/ əˈpəʊnənt /

noun

  1. a person who opposes another in a contest, battle, etc

  2. anatomy an opponent muscle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. opposite, as in position

  2. anatomy (of a muscle) bringing two parts into opposition

  3. opposing; contrary

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does opponent mean? An opponent is someone who is against another person, as in a game, exhibition, or controversy. Opponent can also sometimes be used to describe being in opposition, as in Felix saw no opponent reason to change his vote. Example: Our opponent is strong, so don’t do anything reckless during the game.

Related Words

Opponent, competitor, rival refer to persons engaged in a contest. Opponent is the most impersonal, meaning merely one who opposes; perhaps one who continually blocks and frustrates or one who happens to be on the opposite side in a temporary contest: an opponent in a debate. Competitor emphasizes the action in striving against another, or others, for a definite, common goal: competitors in business. Rival has both personal and emotional connotations; it emphasizes the idea that (usually) two persons are struggling to attain the same object: rivals for an office.

Other Word Forms

  • opponency noun

Etymology

Origin of opponent

1580–90; < Latin oppōnent- (stem of oppōnēns, present participle of oppōnere to place over, against, or in front of, make an obstacle), equivalent to op- op- + pōn ( ere ) to place, set, put + -ent- -ent

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Makhmudov is a very well-picked opponent for a number of reasons.

From BBC • Apr. 9, 2026

His opponent was a 20-year-old prodigy from Uzbekistan named Javokhir Sindarov.

From The Wall Street Journal • Apr. 6, 2026

French President Jacques Chirac, a strong opponent of the effort in Iraq, rebuked them for having “missed a great opportunity to shut up.”

From The Wall Street Journal • Apr. 6, 2026

She had 16 in a lower-scoring performance against Texas on Friday, but her imposing defense and ability to move as fluidly as a guard make her a matchup headache for any opponent.

From Los Angeles Times • Apr. 5, 2026

“It is a matter of perspective, the difference between opponent and partner,” Tsukiko says.

From "The Night Circus" by Erin Morgenstern