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

121 entries under challenge topic. ×

5
negative(verb, check, reject, oppose, criticize)
5
refute(verb, break, disregard, oppose, criticize)
5
resist(verb, break, disregard, oppose, criticize)
4
disaffirm(verb, break, check, disregard, oppose)
3
belie(verb, oppose, deny, undo)
3
blast(verb, charge, attack, criticize, dispute)
3
discredit(verb, charge, dispute, doubt)
3
put down(verb, expression, phrasal verb, criticize, dispute)
3
query(verb, get, charge, oppose, dispute)
3
rebut(verb, deny, question, undo)
2
break(verb, disregard, criticize, dispute, hinder)
2
confront(verb, get, oppose, criticize, dispute)
2
confute(verb, question, contest, discredit)
2
counter(verb, check, oppose, resist)
2
dare(verb, get, oppose, dispute, provoke)
2
disclaim(verb, reject, oppose, deny)
2
fly in the face of(verb, expression, idiom, get, oppose)
2
repudiate(verb, break, reject, disregard, oppose)
2
slam(verb, criticize, dispute, informal)
2
smear(verb, attack, criticize, dispute, censure)
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APASmart Define. (2015). impugn thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/impugn/thesaurus/synonyms
ChicagoSmart Define. 2015. "impugn thesaurus" https://smartdefine.org/impugn/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, impugn thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/impugn/thesaurus/synonyms>.
MLASmart Define. "impugn thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/impugn/thesaurus/synonyms>