33 entries under fail topic. ×

1
depreciate(verb, decline, lower, weaken)
1
disintegrate(verb, decline, reduce, lower)
1
fall(reduce, degenerate, deteriorate, worsen)
1
flag(verb, decline, lower, weaken)
1
go downhill(verb, expression, decline, reduce)
1
impair(verb, decline, diminish, lower)
1
injure(verb, decline, lower, weaken)
1
languish(verb, decline, lower, weaken)
1
lower(verb, decline, diminish, weaken)
1
rot(verb, decline, reduce, lower)
1
slide back(expression, fall, degenerate, deteriorate)
1
spoil(verb, decline, lower, weaken)
1
suffer(fall, degenerate, deteriorate, revert)
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APASmart Define. (2016). retrogress thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/retrogress/thesaurus/synonyms
ChicagoSmart Define. 2016. "retrogress thesaurus" https://smartdefine.org/retrogress/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, retrogress thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/retrogress/thesaurus/synonyms>.
MLASmart Define. "retrogress thesaurus" 14 March 2016. Web. 26 September 2026. <https://smartdefine.org/retrogress/thesaurus/synonyms>