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  1. Dictionary
    antagonist
    /anˈtaɡənɪst/

    noun

    • 1. a person who actively opposes or is hostile to someone or something; an adversary: "he turned to confront his antagonist"
    • 2. a substance which interferes with or inhibits the physiological action of another: "LSD is a serotonin antagonist"

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  2. dictionary.cambridge.org › dictionary › englishANTAGONIST | English meaning - Cambridge Dictionary

    ANTAGONIST definition: 1. a person who is strongly opposed to something or someone: 2. a muscle that performs the…. Learn more.

  3. www.merriam-webster.com › dictionary › antagonistAntagonist Definition & Meaning - Merriam-Webster

    The meaning of ANTAGONIST is one that contends with or opposes another : adversary, opponent. How to use antagonist in a sentence. Did you know?

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  5. www.dictionary.com › browse › antagonistANTAGONIST Definition & Meaning | Dictionary.com

    noun. a person who is opposed to, struggles against, or competes with another; opponent; adversary. Synonyms: foe, enemy, contestant. Antonyms: friend, ally. the adversary of the hero or protagonist of a drama or other literary work: Iago is the antagonist of Othello. Physiology. a muscle that acts in opposition to another.

  6. dictionary.cambridge.org › us › dictionaryANTAGONIST | definition in the Cambridge English Dictionary

    Antagonist is a noun that can mean a person, a muscle, or a chemical that opposes or stops something else. Learn the meaning, pronunciation, and usage of antagonist with examples from various sources.

  7. www.vocabulary.com › dictionary › antagonistAntagonist - Definition, Meaning & Synonyms | Vocabulary.com

    An antagonist is someone who opposes someone else. In Superman comics, the antagonist is Lex Luthor, evil genius and archenemy of the superhero.

  8. www.collinsdictionary.com › dictionary › englishANTAGONIST definition and meaning | Collins English Dictionary

    An antagonist is any drug that counteracts the effects of another drug or substance. An antagonist occupies receptors and stops them from reacting fully with an agonist. An opioid antagonist blocks the effect of opioids in the brain.

  9. www.oxfordlearnersdictionaries.com › english › antagonistantagonist noun - Definition, pictures, pronunciation and usage...

    An antagonist is a person who strongly opposes somebody or something. Learn how to use this word in formal contexts with synonyms, pronunciation and usage notes.