117 entries under noun topic. ×

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attacker(rival, opponent)
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bad person(expression, rival, opponent)
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battle
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bout
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buddy(opponent, peer, competitor)
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charger
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citer
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comer
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contradictor
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criticizer
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denier
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doubter
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emulator(rival, opponent, favorite, peer)
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figure skater(competitor, jock, athlete, sportsperson)
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finalist
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iconoclast(rival, opponent)
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objector
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opposite number(expression, rival, opponent, peer)
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oppositionist
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oppugner(rival, opponent)
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APASmart Define. (2015). challenger thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/challenger/thesaurus/synonyms
ChicagoSmart Define. 2015. "challenger thesaurus" https://smartdefine.org/challenger/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, challenger thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/challenger/thesaurus/synonyms>.
MLASmart Define. "challenger thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/challenger/thesaurus/synonyms>