Synonyms|391Antonyms|160|Broader|4Narrower|7Related|1k
1
insubstantial(adjective, weak, thin, delicate, shaky)
1
klutzy
1
limited(inferior, inadequate, feeble, useless, vain)
1
lousy
1
low(adjective, weak, thin, delicate, shaky)
1
low-grade
1
low-value
1
meaningless
1
mistimed(adjective, inexpedient)
1
neutralized(inferior, inadequate, limited, feeble, useless)
1
no can do(weak, skill, inadequate, unfit, inept)
1
no good(expression, weak, skill, inadequate, unfit)
1
not able(weak, skill, inadequate, unfit, inept)
1
not cut out for(expression, adjective, idiom, weak, inadequate)
1
not equal to(expression, idiom, weak, inadequate, useless)
1
not have it(expression, inadequate, useless, inept, unable)
1
not up to(expression, idiom, weak, skill, inadequate)
1
nugatory(failure, inferior, inadequate, limited, feeble)
1
null(inferior, inadequate, limited, feeble, useless)
1
of little value
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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>