9
vice(noun, wrong, slip, weakness, burden)
8
dying(noun, verb, adjective, decline, collapse)
7
deterioration(noun, drop, decline, ruin, defeat)
7
downfall(noun, drop, decline, ruin, defeat)
7
drawback(noun, trouble, check, block, difficulty)
7
failed
7
inadequacy(noun, trouble, decline, ruin, defeat)
6
abortion(noun, decline, ruin, defeat, neglect)
6
declining(adjective, last, critical, final, ultimate)
6
defective(adjective, poor, short, inadequate, insufficient)
6
deficient(adjective, close, light, poor, short)
6
degeneration(noun, drop, decline, fall, collapse)
6
inadequate(adjective, close, light, weak, poor)
6
lacking(adjective, preposition, weak, poor, short)
6
short(adjective, close, light, weak, poor)
6
shy(adjective, close, light, weak, poor)
6
wanting(verb, adjective, preposition, close, light)
6
weakening(noun, adjective, drop, fall, failure)
5
abortive(adjective, failing, vain)
5
collapsing(verb, adverb)
10 years ago|21k views|share |citing 
APASmart Define. (2015). failing thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/failing/thesaurus/synonyms
ChicagoSmart Define. 2015. "failing thesaurus" https://smartdefine.org/failing/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, failing thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/failing/thesaurus/synonyms>.
MLASmart Define. "failing thesaurus" 23 December 2015. Web. 22 September 2026. <https://smartdefine.org/failing/thesaurus/synonyms>