74 entries under impugn topic. ×

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have at(verb, expression, challenge, question, contest)
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kick around(verb, expression, challenge, question, contest)
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lock horns(verb, expression, challenge, question, contest)
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moot(verb, challenge, question, contest)
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negate(verb, dispute, challenge, doubt, question)
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pick a bone(verb, expression, idiom, challenge, question)
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quarrel(verb, challenge, question, contest)
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quibble(verb, challenge, question, contest)
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rebut(verb, challenge, question, contest)
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refute(verb, challenge, question, contest)
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take on(verb, expression, challenge, question, contest)
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thrash out(verb, expression, challenge, question, contest)
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toss around(verb, expression, challenge, question, contest)
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wrangle(verb, challenge, question, contest)
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APASmart Define. (2016). query thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/query/thesaurus/synonyms
ChicagoSmart Define. 2016. "query thesaurus" https://smartdefine.org/query/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, query thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/query/thesaurus/synonyms>.
MLASmart Define. "query thesaurus" 17 February 2016. Web. 23 September 2026. <https://smartdefine.org/query/thesaurus/synonyms>