3
cut down(verb, expression, phrasal verb, cut, reduce)
3
debauch(verb, hurt, reduce, ruin, destroy)
3
decline(noun, verb, reduce, fail, ease)
3
demolish(verb, break, end, ruin, destroy)
3
demoralize(verb, reduce, ruin, harm, challenge)
3
dilute(verb, cut, decline, reduce, ruin)
3
disadvantage
3
dull(verb, quiet, diminish, dirty, stain)
3
endamage
3
envenom(verb, harm, aggravate, worsen, poison)
3
foil(hurt, ruin, challenge, weaken, frustrate)
3
hamper(verb, hinder, disable)
3
immobilize(verb, stop, hurt, reduce, ruin)
3
lower(verb, cut, decline, reduce, ruin)
3
maltreat(verb, break, trouble, cut, hurt)
3
overshadow
3
queer(verb, harm, hinder, spoil, weaken)
3
shatter(verb, stop, break, end, hurt)
3
sink(verb, break, decline, reduce, ruin)
3
strain
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APASmart Define. (2015). impair thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impair/thesaurus/synonyms
ChicagoSmart Define. 2015. "impair thesaurus" https://smartdefine.org/impair/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, impair thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impair/thesaurus/synonyms>.
MLASmart Define. "impair thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/impair/thesaurus/synonyms>