76 entries under weaken topic. ×

1
retrograde(decline, degenerate, deteriorate, decay)
1
retrogress(decline, degenerate, deteriorate, degrade)
1
rot(verb, decline, hurt, dirty)
1
shave(verb, reduce, thin, spoil, alter)
1
sink(decline, degenerate, deteriorate, decay)
1
skid(decline, degenerate, deteriorate, degrade)
1
slide(decline, degenerate, deteriorate, decay)
1
temper(verb, decline, reduce, fail, halt)
1
wear away(expression, decline, degenerate, degrade)
1
worsen(verb, decline, fail, lower)
0
deliquesce(reduce, diminish, thin, alter)
0
diffuse(reduce, thin)
0
get worse(expression, decline, worsen)
0
liquefy(reduce, diminish, thin, alter)
0
needle(reduce, diminish, thin, alter)
0
wane(verb, decline, reduce, fail, halt)
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APASmart Define. (2016). adulterate thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/adulterate/thesaurus/synonyms
ChicagoSmart Define. 2016. "adulterate thesaurus" https://smartdefine.org/adulterate/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, adulterate thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/adulterate/thesaurus/synonyms>.
MLASmart Define. "adulterate thesaurus" 29 February 2016. Web. 30 September 2026. <https://smartdefine.org/adulterate/thesaurus/synonyms>