GNU Collaborative International Dictionary of English

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Found 2 definitions

1.       
   antagonist , n. [L. antagonista, Gr. ἀνταγωνιστής; ἀντί against + ἀγωνιστής combatant, champion, fr. ἀγωνίζεσθαι: cf. F. antagoniste. See Antagonism.]
   One who contends with another, especially in combat; an adversary; an opponent.
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   Antagonist of Heaven's Almighty King.
   Milton.
   
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   Our antagonists in these controversies.
   Hooker.
   
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   (Anat.) A muscle which acts in opposition to another; as a flexor, which bends a part, is the antagonist of an extensor, which extends it.  AS
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   (Med.) A substance which opposes the actions of another substance in the body, especially a drgu that counteracts the effects of another drug.
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    + 
   AS
   Syn. -- Adversary; enemy; opponent; foe; competitor. See Adversary.
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2.       
   Antagonist, a. Antagonistic; opposing; counteracting; as, antagonist schools of philosophy.
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