English noun: antagonist | 
| 1.  | antagonist (person) someone who offers opposition | 
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  | Synonyms | adversary, opponent, opposer, resister | 
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  | Broader (hypernym) | individual, mortal, person, somebody, someone, soul | 
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  | Narrower (hyponym) | dueler, duelist, dueller, duellist, enemy, foe, foeman, Luddite, opposition, withstander | 
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  | Instance hyponym | Antichrist | 
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  | Antonyms | agonist | 
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| 2.  | antagonist (body) a muscle that relaxes while another contracts | 
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  | Samples | When bending the elbow the triceps are the antagonist.
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  | Broader (hypernym) | antagonistic muscle | 
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| 3.  | antagonist (artifact) a drug that neutralizes or counteracts the effects of another drug | 
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  | Broader (hypernym) | drug | 
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  | Narrower (hyponym) | estrogen antagonist, narcotic antagonist, tamoxifen | 
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  | Antonyms | synergist | 
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