Synonyms|391Antonyms|160|Broader|4Narrower|7Related|1k
2
defective
2
disadvantageous(adjective, inexpedient)
2
gauche(adjective, incompetent, clumsy, inexpert)
2
half-baked(adjective, well, incompetent, wasteful, unproductive)
2
idle(adjective, weak, inferior, inadequate, limited)
2
impuissant(weak, skill, inadequate, unfit, inept)
2
inactive
2
inadept(incompetent, clumsy, inexpert)
2
inexperienced(adjective, inadequate, useless, improper, incompetent)
2
inoperable
2
inutile
2
pointless
2
purposeless
2
second-rate
2
shiftless
2
shoddy
2
toothless
2
undexterous(incompetent, clumsy, inexpert)
2
uneconomic(adjective, unprofitable)
2
uneconomical(adjective, extravagant, incompetent, lavish, wasteful)
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APASmart Define. (2015). inefficient thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/inefficient/thesaurus/synonyms
ChicagoSmart Define. 2015. "inefficient thesaurus" https://smartdefine.org/inefficient/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, inefficient thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/inefficient/thesaurus/synonyms>.
MLASmart Define. "inefficient thesaurus" 12 November 2015. Web. 22 September 2026. <https://smartdefine.org/inefficient/thesaurus/synonyms>