160 entries under weaken topic. ×

2
mold(decline, lessen, degenerate, deteriorate)
2
molder(verb, stop, break, end, decline)
2
mortify(verb, upset, decline, crush, confuse)
2
pejorate(decline, lessen, degenerate, deteriorate)
2
pollute(verb, decline, lessen, degenerate)
2
putresce(decline, lessen, degenerate, deteriorate)
2
quiet(verb, drop, cut, decline, reduce)
2
reach depths(expression, decline, lessen, degenerate)
2
slack off(verb, expression, drop, cut, decline)
2
suppurate(decline, lessen, degenerate, deteriorate)
2
tail off(expression, drop, cut, decline, reduce)
2
taper off(verb, expression, decline, diminish, decrease)
2
thin(verb, decline, fall, fail, diminish)
2
turn(verb, break, decline, twist, collapse)
2
undermine(verb, break, decline, ruin, destroy)
2
wear down(verb, expression, drop, take, cut)
2
wear out(verb, expression, drop, take, fail)
1
adulterate(decline, degenerate, deteriorate, decay)
1
alloy(decline, degenerate, deteriorate, decay)
1
be worse for wear(decline, degenerate, deteriorate, decay)
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APASmart Define. (2016). sink thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/sink/thesaurus/synonyms
ChicagoSmart Define. 2016. "sink thesaurus" https://smartdefine.org/sink/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, sink thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/sink/thesaurus/synonyms>.
MLASmart Define. "sink thesaurus" 21 March 2016. Web. 30 September 2026. <https://smartdefine.org/sink/thesaurus/synonyms>