1
annihilate(undo, reverse, contradict, void, refute)
1
ascribe(verb, charge, criticize, censure, condemn)
1
assert the contrary(expression, idiom)
1
attack with words(expression, idiom)
1
attribute(verb, charge, criticize, censure, condemn)
1
backbite(verb, charge, criticize, scorn, condemn)
1
bad mouth(verb, expression, disparage, degrade, belittle)
1
bash(verb, attack, criticize, blast, storm)
1
be apprehensive of(verb, dispute, challenge, doubt, question)
1
be curious(verb, dispute, challenge, doubt, question)
1
be dubious(verb, dispute, challenge, doubt, question)
1
be in a quandary(verb, dispute, challenge, doubt, question)
1
be puzzled(verb, dispute, challenge, doubt, question)
1
be uncertain(verb, dispute, challenge, doubt, question)
1
be undetermined(verb, dispute, challenge, doubt, question)
1
beard(verb, get, dispute, provoke, demand)
1
belabour
1
belittle(verb, disparage, degrade, malign, vilify)
1
beset(verb, attack, criticize, blast, storm)
1
blackball(undo, reverse, contradict, void, refute)
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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>