2
deteriorated(adjective, bad, low, deterioration)
2
deterioration(noun, bad, weak, damage, awful)
2
devolve(verb, hurt, damage, harm, bad action)
2
die(verb, advance, hurt, start, damage)
2
dilapidated(adjective, bad, low, deterioration)
2
dirty(verb, stop, drop, clear, decline)
2
disturb(verb, health, plan, harm)
2
downgrade(verb, raise, lower, rank, upgrade)
2
droop(verb, hurt, complete, damage, harm)
2
eat away(verb, health, plan, harm)
2
embitter(verb, bad, harm, disadvantage)
2
explode(verb, health, plan, harm, bang)
2
faded(adjective, bad, low, deterioration)
2
fail(verb, ruin, destroy, damage, harm)
2
far gone(adjective, bad, low, deterioration)
2
frayed(adjective, bad, low, deterioration)
2
frustrate(verb, health, plan, harm)
2
get worse(verb, expression, idiom, health, quality)
2
go(verb, live, differ, earn)
2
go bad(verb, health, quality, bad)
10 years ago|4.8k views|share |citing 
APASmart Define. (2016). improve thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/improve/thesaurus/antonyms
ChicagoSmart Define. 2016. "improve thesaurus" https://smartdefine.org/improve/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, improve thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/improve/thesaurus/antonyms>.
MLASmart Define. "improve thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/improve/thesaurus/antonyms>