120 entries under noun topic. ×

14
fading(verb, adjective, decline, deterioration)
12
declining(verb, adjective, cut, decline)
9
ebbing(verb, adjective, drop, fall)
8
slumping(verb, adjective, declining, shrinking)
8
weakening(adjective, drop, decline, fall)
7
decline(drop, cut, fall, decrease)
7
dwindling(adjective, drop, cut, decline)
7
failing(verb, adjective, drop, decline)
7
lessening(adjective, drop, cut, decline)
7
wane(verb, drop, fall, decrease)
5
diminishing(adjective, cut, decline, reduction)
5
dying(verb, adjective, decline, deterioration)
5
ebb(drop, cut, decline, fall)
5
flagging(adjective, drop, decrease, retreat)
5
worsening(verb, adjective, drop, decline)
4
decrease(drop, cut, decline, fall)
4
deterioration(drop, decline, fall, decrease)
4
downgrade(drop, fall, failure, deterioration)
4
sinking(verb, adjective, drop, decrease)
3
aging(decrease, stale, ebb, senescent)
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APASmart Define. (2015). waning thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/waning/thesaurus/synonyms
ChicagoSmart Define. 2015. "waning thesaurus" https://smartdefine.org/waning/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, waning thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/waning/thesaurus/synonyms>.
MLASmart Define. "waning thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/waning/thesaurus/synonyms>