325 entries under decline topic. ×

2
slack off(expression, drop, cut, reduce)
2
slacken(verb, stop, drop, end, cut)
2
slash(verb, drop, quiet, cut)
2
soften(verb, drop, cut, reduce)
2
spoiling(noun, drop, degradation, slump)
2
subside(verb, stop, drop, end, cut)
2
tail off(verb, expression, phrasal verb, drop, cut)
2
vegetate(verb, idle, stall, loaf)
2
waning(noun, drop, fall, decrease)
2
wear down(expression, drop, cut, reduce)
2
withering(noun, collapse, down, stain)
2
worsening(noun, drop, fall, return)
1
OD(cease, succumb, expire, die)
1
abortion(noun, ruin, defeat, collapse)
1
adulterate(hurt, weaken, dirty, corrupt)
1
alloy(weaken, degenerate, deteriorate, worsen)
1
bate(verb, stop, drop, end)
1
be destroyed(cease, succumb, expire, die)
1
be killed(cease, succumb, expire, die)
1
be lost(succumb, expire, die)
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APASmart Define. (2016). decay thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/decay/thesaurus/synonyms
ChicagoSmart Define. 2016. "decay thesaurus" https://smartdefine.org/decay/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, decay thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/decay/thesaurus/synonyms>.
MLASmart Define. "decay thesaurus" 14 March 2016. Web. 25 September 2026. <https://smartdefine.org/decay/thesaurus/synonyms>