1
skimpiness(defect, deficiency, imperfection, inadequacy, shortage)
1
stupidity(noun, ignorance, inability, incapacity, incompetence)
1
thoughtlessness
1
unaptness
1
uncleverness
1
undeftness
1
underage(defect, deficiency, imperfection, inadequacy, shortage)
1
undexterousness
1
undextrousness
1
unfittedness
1
ungainliness
1
unintelligence
1
unproductiveness
1
unproficiency
1
unschooledness
1
unsuitability(noun, inexpedience)
1
unsuitableness(noun, defect, deficiency, imperfection, inadequacy)
1
untimeliness(noun, inexpedience)
1
untrainedness
1
wardship
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APASmart Define. (2015). inefficiency thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/inefficiency/thesaurus/synonyms
ChicagoSmart Define. 2015. "inefficiency thesaurus" https://smartdefine.org/inefficiency/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, inefficiency thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/inefficiency/thesaurus/synonyms>.
MLASmart Define. "inefficiency thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/inefficiency/thesaurus/synonyms>