| folding(noun, ruin, flop, downfall) | |
| genocide(noun, murder, massacre, killing, race murder) | |
| heedlessness(noun, disregard, neglect, carelessness, negligence) | |
| human error(expression, idiom) | |
| inaction | |
| indifference(noun, disregard, negligence, inattention, abandonment) | |
| inefficacy(noun, defeat, blow, weakness, skill) | |
| infirmity(noun, weakness, fault, shortcoming, hopelessness) | |
| infraction(noun, dereliction, dereliction of duty) | |
| inobservance | |
| insolvent(noun, person, bomb, disappointment, catastrophe) | |
| mischance(ruin, defeat, blow, cross, lapse) | |
| misdeed(slip, fault, mistake, lapse, error) | |
| misery(noun, trouble, hurt, ruin, blow) | |
| misfire | |
| misstep(noun, move, decline, ruin, slip) | |
| muddle | |
| naught | |
| neglectfulness(noun, disregard, neglect, carelessness, negligence) | |
| nonachievement |
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| APA | Smart Define. (2016). failure thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/failure/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "failure thesaurus" https://smartdefine.org/failure/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, failure thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/failure/thesaurus/synonyms>. |
| MLA | Smart Define. "failure thesaurus" 25 January 2016. Web. 21 September 2026. <https://smartdefine.org/failure/thesaurus/synonyms> |