38 entries under noun topic. ×

18
rival(opponent, adversary, foe, hostile)
15
adversary(opponent, foe, hostile, antagonist)
15
antagonist(opponent, adversary, foe, hostile)
15
enemy(opponent, hostile, adversary, foe)
14
foe(opponent, adversary, hostile, antagonist)
13
opponent(adversary, foe, hostile, antagonist)
11
competitor(opponent, adversary, foe, person)
10
bad person(expression, hostile, rival, opponent)
9
bandit(opponent, adversary, foe, person)
9
contender(opponent, adversary, foe, person)
8
detractor(hostile, rival, opponent, competitor)
8
outsider(person, opponent)
7
archenemy(opponent, person, rival, competitor)
7
opposer(hostile, opponent, adversary, foe)
7
opposite number(expression, hostile, opponent, adversary)
6
backbiter(rival, opponent, competitor, adversary)
6
betrayer(rival, opponent, competitor, adversary)
6
match(hostile, opponent, adversary, foe)
6
traitor(rival, opponent, competitor, adversary)
5
fifth column(expression, rival, opponent, competitor)
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APASmart Define. (2016). sidekick thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/sidekick/thesaurus/antonyms
ChicagoSmart Define. 2016. "sidekick thesaurus" https://smartdefine.org/sidekick/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, sidekick thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/sidekick/thesaurus/antonyms>.
MLASmart Define. "sidekick thesaurus" 29 March 2016. Web. 28 September 2026. <https://smartdefine.org/sidekick/thesaurus/antonyms>