96 entries under decline topic. ×

20
corrupt(verb, adjective, cut, hurt)
20
debase(verb, quiet, cut, hurt)
20
dilute(verb, cut, reduce, ruin)
17
pervert(verb, promote, turn, fail)
16
vitiate(verb, cut, reduce, ruin)
16
weaken(verb, quiet, cut, hurt)
15
alloy(verb, cut, reduce, ruin)
14
cut(verb, hurt, reduce, ruin)
13
degrade(verb, cut, ruin, fail)
11
thin(verb, cut, reduce, ruin)
7
deprave(verb, hurt, harm, corrupt)
7
impair(verb, quiet, cut, reduce)
6
spoil(verb, hurt, ruin, fail)
6
water down(verb, expression, phrasal verb, cut)
5
deteriorate(verb, cut, ruin, fail)
4
degenerate(adjective, weaken, deteriorate, decay)
4
reduce(verb, quiet, ruin, fail)
4
thin out(verb, expression, phrasal verb, reduce)
3
depreciate(verb, cut, ruin, fail)
3
diminish(verb, quiet, reduce, fail)
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APASmart Define. (2016). adulterate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/adulterate/thesaurus/synonyms
ChicagoSmart Define. 2016. "adulterate thesaurus" https://smartdefine.org/adulterate/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, adulterate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/adulterate/thesaurus/synonyms>.
MLASmart Define. "adulterate thesaurus" 29 February 2016. Web. 26 September 2026. <https://smartdefine.org/adulterate/thesaurus/synonyms>