- Definitions|2
- Thesaurus|521
- Abbreviations|0
| foul-up(ineffectiveness, ineptitude) | |
| gaucherie | |
| helplessness(noun, weakness, hopelessness, inability, subjection) | |
| idleness(noun, slowness) | |
| impracticality(awkwardness, uselessness) | |
| inapimpotence | |
| incoherence(ineffectiveness, ineptitude) | |
| inepinutility | |
| infirmity(noun, weakness, hopelessness, inability, helplessness) | |
| insight | |
| intelligence | |
| labor in vain(expression, idiom, inutility) | |
| labor lost(expression, idiom, inutility) | |
| laziness(noun, slowness, idleness) | |
| limitation | |
| lost labor(expression, idiom, inutility) | |
| lost trouble(expression, idiom, inutility) | |
| mere farce(expression, idiom, inutility) | |
| mix-up(ineffectiveness, ineptitude) | |
| needlessness |
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| APA | Smart Define. (2015). inefficiency thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/inefficiency/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "inefficiency thesaurus" https://smartdefine.org/inefficiency/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, inefficiency thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/inefficiency/thesaurus/synonyms>. |
| MLA | Smart Define. "inefficiency thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/inefficiency/thesaurus/synonyms> |