1. (noun) adversary, antagonist, opponent, opposer, resister
someone who offers opposition
Synonyms: obstructionist, opposer, obstructer, obstructor, opposite, antagonist, adversary, opposition, opponent, thwarter, resister Antonyms: agonist, synergist
2. (noun) antagonist
a muscle that relaxes while another contracts
Synonyms: opposer, adversary, opponent, resister Antonyms: agonist, synergist
3. (noun) antagonist
a drug that neutralizes or counteracts the effects of another drug
Synonyms: opposer, adversary, opponent, resister Antonyms: agonist, synergist
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