83 entries under inadequate topic. ×

2
impuissant(weak, skill, unfit, inept)
2
inexperienced(adjective, useless, improper, incompetent)
2
uninitiated(useless, inept, unable, unskilled)
2
unsuccessful(weak, inferior, limited, feeble)
2
vain(adjective, weak, inferior, limited)
1
anticlimactic(inferior, limited, feeble, useless)
1
bush-league(useless, inept, unable, unskilled)
1
defeasible(inferior, limited, feeble, useless)
1
floundering(adjective, useless, inept, unable)
1
forceless(inferior, limited, feeble, useless)
1
incapacitated(adjective, weak, skill, incompetent)
1
indecisive(adjective, weak, thin, delicate, inferior)
1
ineligible(useless, incompetent, unqualified, inept)
1
innocuous(inferior, limited, feeble, useless)
1
limited(inferior, feeble, useless, vain)
1
neutralized(inferior, limited, feeble, useless)
1
no can do(weak, skill, unfit, inept)
1
no good(expression, weak, skill, unfit)
1
not able(weak, skill, unfit, inept)
1
not cut out for(expression, adjective, idiom, weak)
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APASmart Define. (2015). inefficient thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/inefficient/thesaurus/synonyms
ChicagoSmart Define. 2015. "inefficient thesaurus" https://smartdefine.org/inefficient/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, inefficient thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/inefficient/thesaurus/synonyms>.
MLASmart Define. "inefficient thesaurus" 12 November 2015. Web. 28 September 2026. <https://smartdefine.org/inefficient/thesaurus/synonyms>