6
deface(verb, bad, hurt, damage, harm)
6
perish(verb, health, break, change, bad)
5
hurt(verb, stop, drop, help, fix)
5
corrupt(verb, stop, drop, help, bad)
5
decompose(verb, health, plan, harm, unite)
5
exacerbate(verb, calm, bad, damage, harm)
5
lessen(verb, stop, drop, decline, damage)
5
spoil(verb, bad, damage, harm, regress)
5
tarnish(verb, fix, bad, damage, harm)
4
depress(verb, stop, drop, order, help)
4
disfigure(verb, bad, hurt, damage, harm)
4
disintegrate(verb, fix, hurt, damage, rise)
4
lower(verb, adjective, stop, drop, decline)
4
unimproved(adjective, bad, low, deterioration)
3
bastardize(verb, quality, bad, hurt, damage)
3
blighted(verb, hurt, damage, harm, bad action)
3
break(verb, health, ruin, plan, destroy)
3
break up(verb, health, ruin, plan, destroy)
3
contaminate(verb, bad, hurt, damage, harm)
3
crumble(verb, hurt, develop, damage, harm)
10 years ago|4.8k views|share |citing 
APASmart Define. (2016). improve thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/improve/thesaurus/antonyms
ChicagoSmart Define. 2016. "improve thesaurus" https://smartdefine.org/improve/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, improve thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/improve/thesaurus/antonyms>.
MLASmart Define. "improve thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/improve/thesaurus/antonyms>