2
attacker
2
challenger
2
contradictor
2
disputer
2
impeacher
2
refuter
1
assailer
1
beaten
1
buffeting
1
claimant
1
complainant
1
confuter
1
contester
1
contravener
1
controvertist
1
denier
1
doubter
1
drub
1
impugning
1
impugns
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APASmart Define. (2015). impugner thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/impugner/thesaurus/synonyms
ChicagoSmart Define. 2015. "impugner thesaurus" https://smartdefine.org/impugner/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, impugner thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/impugner/thesaurus/synonyms>.
MLASmart Define. "impugner thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/impugner/thesaurus/synonyms>