1
blacken(verb, disparage, degrade, belittle, malign)
1
blacklist(verb, attack, criticize, censure, condemn)
1
blister(verb, attack, criticize, blast, disparage)
1
blow sky high(expression, idiom, discredit, confound, contradict)
1
blow the whistle on(verb, expression, idiom, charge, criticize)
1
blow up(verb, expression, discredit, confound, contradict)
1
boycott(verb, attack, criticize, censure, condemn)
1
brand(verb, attack, criticize, censure, condemn)
1
brawl(verb, challenge, deny, doubt, question)
1
break with(expression, undo, reverse, contradict, void)
1
bruise
1
buck(verb, check, oppose, challenge, resist)
1
bust(verb, attack, criticize, blast, storm)
1
carp at(expression, charge, criticize, scorn, condemn)
1
cast aspersions on(expression, idiom, charge, accuse, indict)
1
cast aspersions upon(verb, expression, idiom, phrasal verb, criticize)
1
cast doubt on(expression, idiom, charge, doubt, question)
1
cast doubt upon(verb, expression, idiom, phrasal verb, oppose)
1
cast reflection upon(expression, idiom)
1
cavil(verb, charge, criticize, scorn, condemn)
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APASmart Define. (2015). impugn thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impugn/thesaurus/synonyms
ChicagoSmart Define. 2015. "impugn thesaurus" https://smartdefine.org/impugn/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, impugn thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impugn/thesaurus/synonyms>.
MLASmart Define. "impugn thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/impugn/thesaurus/synonyms>