120 entries under noun topic. ×

1
on the skids(expression, idiom, drop, fall)
1
outward flow(expression, drop, decrease, retreat)
1
petering out(expression, drop, decrease, retreat)
1
pratfall(drop, fall, decrease, failure)
1
recession(drop, fall, decrease, retreat)
1
refluence(drop, decrease, retreat, wane)
1
reflux(drop, decrease, retreat, wane)
1
relapse(drop, decline, fall, decrease)
1
retreat(drop, decrease, wane)
1
retrocession(drop, decrease, retreat, wane)
1
retroflux(drop, decrease, retreat, wane)
1
rot(decline, deterioration, degeneration)
1
rust(decline, deterioration, degeneration)
1
senility(drop, fall, failure, deterioration)
1
setback(decline, deterioration)
1
shrinkage(drop, cut, decline, decrease)
1
skids(drop, fall, failure, deterioration)
1
slackening(adjective, drop, decrease, retreat)
1
slump(drop, fall, failure, deterioration)
1
sweep(drop, decrease, retreat, wane)
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APASmart Define. (2015). waning thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/waning/thesaurus/synonyms
ChicagoSmart Define. 2015. "waning thesaurus" https://smartdefine.org/waning/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, waning thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/waning/thesaurus/synonyms>.
MLASmart Define. "waning thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/waning/thesaurus/synonyms>