66 entries under decline topic. ×

1
dwindle(verb, drop, close, reduce)
1
fail(verb, lower, weaken, lapse)
1
fall apart(expression, weaken, degenerate, degrade)
1
flag(verb, fail, lower, weaken)
1
go downhill(verb, expression, reduce, fail)
1
go to pieces(expression, idiom, degenerate, deteriorate)
1
go to pot(verb, expression, idiom, weaken)
1
go to the dogs(expression, idiom, degenerate, deteriorate)
1
hit the skids(expression, idiom, weaken, degenerate)
1
impair(verb, fail, diminish, lower)
1
injure(verb, fail, lower, weaken)
1
languish(verb, fail, lower, weaken)
1
lose it(expression, weaken, degenerate, degrade)
1
lose quality(expression, weaken, degenerate, degrade)
1
lower(verb, fail, diminish, weaken)
1
mar(weaken, degenerate, deteriorate, degrade)
1
pervert(weaken, degenerate, deteriorate, degrade)
1
reduce(verb, drop, close, withdraw)
1
rot(verb, reduce, fail, lower)
1
shrink(verb, drop, close, reduce)
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APASmart Define. (2016). retrogress thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/retrogress/thesaurus/synonyms
ChicagoSmart Define. 2016. "retrogress thesaurus" https://smartdefine.org/retrogress/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, retrogress thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/retrogress/thesaurus/synonyms>.
MLASmart Define. "retrogress thesaurus" 14 March 2016. Web. 28 September 2026. <https://smartdefine.org/retrogress/thesaurus/synonyms>