Synonyms|664Antonyms|113|Broader|5Narrower|0Related|240

121 entries under challenge topic. ×

2
trash(verb, attack, criticize, dispute)
1
be apprehensive of(verb, dispute, doubt, question)
1
be curious(verb, dispute, doubt, question)
1
be dubious(verb, dispute, doubt, question)
1
be in a quandary(verb, dispute, doubt, question)
1
be puzzled(verb, dispute, doubt, question)
1
be uncertain(verb, dispute, doubt, question)
1
be undetermined(verb, dispute, doubt, question)
1
brawl(verb, deny, doubt, question)
1
buck(verb, check, oppose, resist)
1
cast aspersions upon(verb, expression, idiom, phrasal verb, criticize)
1
cast doubt upon(verb, expression, idiom, phrasal verb, oppose)
1
clash(verb, deny, doubt, question)
1
come down on(verb, expression, idiom, criticize, dispute)
1
counteract(verb, break, check, disregard, oppose)
1
cut to shreds(verb, expression, idiom, criticize, dispute)
1
debate(verb, deny, doubt, question)
1
demur(verb, dispute, doubt, question)
1
disbelieve(verb, dispute, doubt, question)
1
distrust(verb, oppose, dispute, doubt)
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APASmart Define. (2015). impugn thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impugn/thesaurus/synonyms
ChicagoSmart Define. 2015. "impugn thesaurus" https://smartdefine.org/impugn/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, impugn thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impugn/thesaurus/synonyms>.
MLASmart Define. "impugn thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/impugn/thesaurus/synonyms>