2
found wanting(expression, weak, poor, insufficient, scarce)
2
glitch(noun, adjective, weak, weakness, poor)
2
hole(noun, weakness, crack, fault, blemish)
2
idiosyncrasy(noun, weakness, fault, shortcoming)
2
impotence(noun, weakness, fault, lack, lapse)
2
in arrear(expression, idiom, incompleteness)
2
in default(expression, idiom, incompleteness)
2
in poor health(expression, idiom, ill, sick, unwell)
2
in short supply(expression, adjective, idiom, inadequate, insufficient)
2
in trouble(expression, adjective, idiom, adverb, struggling)
2
incompetence(defect, deficiency, imperfection, limitation, inadequacy)
2
incompetent(noun, adjective, weak, slight, poor)
2
indiscretion(noun, wrong, slip, weakness, burden)
2
injury(noun, defeat, fault, affection, blemish)
2
irregularity(noun, weakness, crack, fault, blemish)
2
laxity
2
liability(noun, trouble, wrong, difficulty, weakness)
2
losing(verb, adjective, vain, ineffective, unsuccessful)
2
loss(noun, drop, decline, ruin, defeat)
2
mark(noun, weakness, crack, fault, blemish)
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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>