2
alter(verb, change, twist, deceive, misrepresent)
2
amplify(verb, worsen, intensify, heighten)
2
annoy(verb, decline, degenerate, worsen, rub)
2
back wrong horse(expression, idiom, decline, fall, fail)
2
be defeated(verb, decline, fall, fail, slip)
2
be demoted(verb, decline, fall, fail, slip)
2
be found lacking(verb, decline, fall, fail, slip)
2
be impaired(verb, get, decline, hurt, smart)
2
be in vain(verb, decline, fall, fail, slip)
2
be ruined(verb, decline, fall, fail, slip)
2
be unsuccessful(verb, decline, fall, fail, slip)
2
become contaminated(verb, expression, decline, weaken, lessen)
2
blunder(verb, decline, fall, fail, slip)
2
break up(verb, expression, beat, decline, crush)
2
calm down(expression, drop, cut, decline, reduce)
2
cast
2
change(verb, return, twist, alter, deceive)
2
cheapen(verb, drop, cut, reduce, ruin)
2
check(verb, drop, quiet, cut, decline)
2
come to naught(verb, expression, idiom, decline, fall)
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APASmart Define. (2016). deteriorate thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/deteriorate/thesaurus/synonyms
ChicagoSmart Define. 2016. "deteriorate thesaurus" https://smartdefine.org/deteriorate/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, deteriorate thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/deteriorate/thesaurus/synonyms>.
MLASmart Define. "deteriorate thesaurus" 22 March 2016. Web. 23 September 2026. <https://smartdefine.org/deteriorate/thesaurus/synonyms>