6
go downhill(verb, expression, idiom, stop, drop)
6
hamstring(verb, stop, hurt, ruin, restrain)
6
hurt(verb, stop, break, cut, ruin)
6
injure(verb, break, dull, quiet, cut)
6
invalidate(verb, stop, decline, hurt, reduce)
6
lighten(verb, drop, dull, cut, check)
6
maim(verb, stop, break, cut, hurt)
6
minimize(verb, decline, reduce, fail, ease)
6
relapse(verb, drop, decline, reduce, fall)
6
sicken(verb, break, decline, develop, fail)
6
slump(verb, drop, cut, decline, reduce)
6
strain(verb, fail, damage, annoy, limit)
6
thin out(verb, expression, phrasal verb, close, decline)
6
waste away(verb, expression, break, end, decline)
6
wreck(verb, stop, break, hurt, ruin)
6
yield(verb, break, drop, go, give)
5
alleviate(verb, calm, dull, quiet, check)
5
blur
5
burn out(verb, expression, drop, take, fail)
5
counteract(verb, cancel, undo, impair, discredit)
10 years ago|22k views|share |citing 
APASmart Define. (2016). weaken thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/weaken/thesaurus/synonyms
ChicagoSmart Define. 2016. "weaken thesaurus" https://smartdefine.org/weaken/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, weaken thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/weaken/thesaurus/synonyms>.
MLASmart Define. "weaken thesaurus" 26 February 2016. Web. 26 September 2026. <https://smartdefine.org/weaken/thesaurus/synonyms>