322 entries under decline topic. ×

2
pollute(verb, weaken, lessen, degenerate)
2
putresce(weaken, lessen, degenerate, deteriorate)
2
quell(verb, drop, quiet, cut)
2
quiet(verb, drop, cut, reduce)
2
reach depths(expression, weaken, lessen, degenerate)
2
regress(verb, drop, drive, settle)
2
retreat(noun, drop, recession)
2
retrogression(noun, drop, decay, degradation)
2
rot(verb, weaken, lessen, degenerate)
2
run low(expression, drop, cut, reduce)
2
sap(weaken, lessen, degenerate, deteriorate)
2
shrink(verb, drop, quiet, cut)
2
shrivel(verb, drop, cut, reduce)
2
sicken(weaken, lessen, degenerate, deteriorate)
2
slack off(expression, drop, cut, reduce)
2
slacken(verb, drop, cut, reduce)
2
slant(noun, verb, drop, change)
2
slope(verb, move, drop, drive)
2
soften(verb, drop, quiet, cut)
2
spoil(verb, weaken, lessen, degenerate)
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APASmart Define. (2015). slump thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/slump/thesaurus/synonyms
ChicagoSmart Define. 2015. "slump thesaurus" https://smartdefine.org/slump/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, slump thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/slump/thesaurus/synonyms>.
MLASmart Define. "slump thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/slump/thesaurus/synonyms>