50 entries under fester topic. ×

2
decline(weaken, lessen, degenerate, deteriorate, wane)
2
defile(verb, decline, weaken, lessen, degenerate)
2
degenerate(verb, decline, weaken, lessen, deteriorate)
2
depreciate(decline, weaken, lessen, degenerate, deteriorate)
2
deteriorate(verb, decline, weaken, lessen, degenerate)
2
discolor(verb, decline, weaken, lessen, degenerate)
2
dissolve(verb, decline, weaken, lessen, degenerate)
2
dry-rot(decline, weaken, lessen, degenerate, deteriorate)
2
dwindle(decline, weaken, lessen, degenerate, deteriorate)
2
fade(verb, decline, weaken, lessen, degenerate)
2
fail(decline, weaken, lessen, degenerate, deteriorate)
2
get worse(expression, decline, weaken, lessen, degenerate)
2
go to seed(expression, idiom, decline, weaken, lessen)
2
go to the dogs(expression, idiom, decline, weaken, lessen)
2
hit rock bottom(expression, idiom, decline, weaken, lessen)
2
hit the skids(expression, idiom, decline, weaken, lessen)
2
lessen(verb, decline, weaken, degenerate, deteriorate)
2
pejorate(decline, weaken, lessen, degenerate, deteriorate)
2
perish(decline, weaken, lessen, degenerate, deteriorate)
2
pollute(verb, decline, weaken, lessen, degenerate)
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APASmart Define. (2015). mildew thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mildew/thesaurus/synonyms
ChicagoSmart Define. 2015. "mildew thesaurus" https://smartdefine.org/mildew/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, mildew thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mildew/thesaurus/synonyms>.
MLASmart Define. "mildew thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/mildew/thesaurus/synonyms>