203 entries under adjective topic. ×

5
sinking(mean, low, last, immoral)
5
worsening(noun, drop, fall, failure)
4
crumbling(decline, ruin, collapse, deterioration)
4
debilitated(weak, thin, delicate, ill)
4
decrepit(weak, thin, delicate, ill)
4
dwindling(noun, drop, decline, fall)
4
exhausted(weak, thin, delicate, shaky)
4
flagging(weakening, lessening, fading, deteriorating)
4
ineffectual(weak, thin, delicate, shaky)
4
insufficient(close, light, weak, poor)
4
languishing(verb, weakening, fading, wearying)
4
retrogressive(mean, low, immoral, debased)
4
scanty(light, weak, poor, short)
4
scarce(weak, poor, short, shy)
4
sickly(weak, thin, delicate, ill)
4
skimpy(close, light, weak, poor)
4
unsuccessful(vain, ineffective, weakening, unproductive)
4
waning(noun, verb, drop, decline)
4
weakened(weak, thin, delicate, shaky)
3
ailing(noun, weak, disorder, weakness)
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APASmart Define. (2015). failing thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/failing/thesaurus/synonyms
ChicagoSmart Define. 2015. "failing thesaurus" https://smartdefine.org/failing/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, failing thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/failing/thesaurus/synonyms>.
MLASmart Define. "failing thesaurus" 23 December 2015. Web. 25 September 2026. <https://smartdefine.org/failing/thesaurus/synonyms>