2
careless(adjective, weak, feeble, incompetent, wasteful)
2
clumsy(adjective, skill, inadequate, unfit, inept)
2
deficient(adjective, poor, inadequate, ineffective, toothless)
2
emasculate(inadequate, limited, feeble, useless, vain)
2
etiolated(adjective, weak, thin, delicate, shaky)
2
exhausted(adjective, weak, thin, delicate, useless)
2
faint-hearted(adjective, weak, soft, uncertain, unstable)
2
frail(adjective, weak, thin, delicate, shaky)
2
implausible(adjective, poor, inadequate, ineffective, toothless)
2
inactive
2
inane
2
indecisive(adjective, weak, thin, delicate, uncertain)
2
infecund(adjective, weak, inadequate, incompetent, inept)
2
lazy
2
low(adjective, mean, weak, thin, delicate)
2
maladroit(adjective, inadequate, useless, inept, unable)
2
meagre
2
meek
2
narrow(adjective, mean, obscure, miserable, insignificant)
2
no-good(adjective, poor, base, inferior, insignificant)
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APASmart Define. (2016). ineffectual thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ineffectual/thesaurus/synonyms
ChicagoSmart Define. 2016. "ineffectual thesaurus" https://smartdefine.org/ineffectual/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, ineffectual thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ineffectual/thesaurus/synonyms>.
MLASmart Define. "ineffectual thesaurus" 24 March 2016. Web. 24 September 2026. <https://smartdefine.org/ineffectual/thesaurus/synonyms>