5
unimportant(adjective, mean, poor, base, inferior)
5
unusable(adjective, weak, poor, base, inferior)
5
valueless(adjective, poor, base, stupid, inferior)
5
void(adjective, inadequate, limited, feeble, useless)
5
work-shy(adjective, idle, lazy, indolent, faineant)
4
aimless(adjective, weak, careless, insignificant, feeble)
4
failing(adjective, weak, thin, delicate, shaky)
4
flabby(adjective, weak, poor, thin, delicate)
4
impracticable(adjective, stupid, idle, trivial, incompetent)
4
inexpert(adjective, inadequate, useless, incompetent, inept)
4
invalid(adjective, poor, inadequate, unsound, trifling)
4
irresponsible(adjective, weak, careless, feeble)
4
jejune
4
little
4
mean(adjective, poor, miserable, insignificant, unimportant)
4
null(adjective, inferior, inadequate, limited, feeble)
4
poor(adjective, dull, light, weak, soft)
4
puny(adjective, mean, weak, thin, delicate)
4
small(adjective, mean, poor, insignificant, inadequate)
4
superfluous(adjective, inutility)
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APASmart Define. (2016). ineffectual thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ineffectual/thesaurus/synonyms
ChicagoSmart Define. 2016. "ineffectual thesaurus" https://smartdefine.org/ineffectual/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, ineffectual thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ineffectual/thesaurus/synonyms>.
MLASmart Define. "ineffectual thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/ineffectual/thesaurus/synonyms>