14
worse(adjective, adverb)
8
worsen(verb, stop, fail)
7
deteriorate(verb, stop, fail, worsen)
4
aggravate
4
corrupt(verb, stop, help, fail, aid)
4
decline
4
exasperate
4
minor
4
subpar
4
unhealthy(adjective, inferior)
3
debase
3
exacerbate
3
inferior(adjective, importance, important, less)
3
injure(verb, stop, fail, worsen)
3
smaller(adjective, inferior)
3
worsened
2
descend
2
get worse(verb, expression, idiom, stop, fail)
2
harm(verb, stop, fail, worsen)
2
impair(verb, stop, fail, worsen)
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APASmart Define. (2016). better thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/better/thesaurus/antonyms
ChicagoSmart Define. 2016. "better thesaurus" https://smartdefine.org/better/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, better thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/better/thesaurus/antonyms>.
MLASmart Define. "better thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/better/thesaurus/antonyms>