37 entries under opponent topic. ×

18
rival(noun, adversary, foe, hostile)
15
adversary(noun, foe, hostile, antagonist)
15
antagonist(noun, adversary, foe, hostile)
15
enemy(noun, hostile, adversary, foe)
14
foe(noun, adversary, hostile, antagonist)
11
competitor(noun, adversary, foe, person)
10
bad person(noun, expression, hostile, rival)
9
bandit(noun, adversary, foe, person)
9
contender(noun, adversary, foe, person)
8
detractor(noun, hostile, rival, competitor)
8
outsider(noun, person)
7
archenemy(noun, person, rival, competitor)
7
opposer(noun, hostile, adversary, foe)
7
opposite number(noun, expression, hostile, adversary)
6
backbiter(noun, rival, competitor, adversary)
6
betrayer(noun, rival, competitor, adversary)
6
match(noun, hostile, adversary, foe)
6
traitor(noun, rival, competitor, adversary)
5
fifth column(noun, expression, rival, competitor)
5
opposition(noun, person, rival, competitor)
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APASmart Define. (2016). sidekick thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sidekick/thesaurus/antonyms
ChicagoSmart Define. 2016. "sidekick thesaurus" https://smartdefine.org/sidekick/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, sidekick thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sidekick/thesaurus/antonyms>.
MLASmart Define. "sidekick thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/sidekick/thesaurus/antonyms>