170 entries under weaken topic. ×

4
recede(verb, stop, drop, dull, close)
4
shrivel(verb, drop, close, cut, decline)
4
vitiate(verb, decline, ruin, destroy, fail)
4
water(diminish, decrease, thin, alter)
3
deteriorate(verb, drop, cut, decline, destroy)
3
devitalize(verb, upset, dull, quiet, decline)
3
disable(verb, force, defeat, destroy, diminish)
3
eat away(verb, expression, consume, drain)
3
incapacitate(verb, dull, quiet, ruin, destroy)
3
mar(noun, verb, break, ruin, defeat)
3
peter out(verb, expression, drop, cut, decline)
3
spoil(verb, break, fix, ruin, defeat)
3
water down(verb, expression, phrasal verb, cut, decline)
2
alter(verb, change, turn, diminish, limit)
2
close(verb, drop, decline, withdraw, ease)
2
damage(verb, ruin, destroy, lower, harm)
2
delete(verb, destroy, diminish, decrease)
2
die out(verb, expression, close, decline, moderate)
2
doctor(verb, cut, fix, ruin, diminish)
2
harm(verb, ruin, damage, hinder, spoil)
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APASmart Define. (2016). reduce thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/reduce/thesaurus/synonyms
ChicagoSmart Define. 2016. "reduce thesaurus" https://smartdefine.org/reduce/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, reduce thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/reduce/thesaurus/synonyms>.
MLASmart Define. "reduce thesaurus" 26 February 2016. Web. 27 September 2026. <https://smartdefine.org/reduce/thesaurus/synonyms>