20 entries under deterioration topic. ×

6
worsen(verb, action, act, process)
2
deface(verb, action, worsening)
1
blemish(verb, action, worsening)
1
blight(verb, action, worsening)
1
damage(verb, action, worsening)
1
decrease(verb, action, act)
1
diminish(verb, action, worsening)
1
disfigure(verb, action, worsening)
1
endamage(verb, action, worsening)
1
harm(verb, action, worsening)
1
hurt(verb, action, worsening)
1
impair(verb, action, worsening)
1
injure(verb, action, worsening)
1
lessen(verb, action, worsening)
1
lower(verb, action, worsening)
1
mar(verb, action, worsening)
1
reduce(verb, action, worsening)
1
spoil(verb, action, worsening)
1
tarnish(verb, action, worsening)
1
vitiate(verb, action, worsening)
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APASmart Define. (1970). level up thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/level_up/thesaurus/antonyms
ChicagoSmart Define. 1970. "level up thesaurus" https://smartdefine.org/level_up/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 1970, level up thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/level_up/thesaurus/antonyms>.
MLASmart Define. "level up thesaurus" 1 January 1970. Web. 22 September 2026. <https://smartdefine.org/level_up/thesaurus/antonyms>