6
canceling(verb, annulling, negating, compensating)
6
invalidating(verb, bad, weak, gloomy, annulling)
6
negating(verb, counter, antagonistic, contrary, conflicting)
5
annulling(verb, bad, weak, gloomy, annulling)
5
neutralizing(verb, bad, weak, gloomy, annulling)
4
abolishing(verb, annulling)
4
negative(adjective, bad, contradictory)
3
abrogating(verb, bad, weak, gloomy)
3
annihilating
3
contradictory(adjective, antagonistic)
3
counteracting(verb, compensating)
3
counterbalancing(verb, negating, compensating)
3
denying(verb, bad, weak, gloomy, annulling)
3
disavowing(verb, bad, weak, gloomy, annulling)
3
emptying(noun, verb)
3
offsetting(verb, compensating)
3
repudiating(verb, annulling, negating)
3
revoking(verb, annulling)
2
abating
2
cancelling
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APASmart Define. (2015). nullifying thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/nullifying/thesaurus/synonyms
ChicagoSmart Define. 2015. "nullifying thesaurus" https://smartdefine.org/nullifying/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, nullifying thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/nullifying/thesaurus/synonyms>.
MLASmart Define. "nullifying thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/nullifying/thesaurus/synonyms>