336 entries under adjective topic. ×

5
trivial(poor, base, stupid, inferior)
5
unavailable(weak, stupid, idle, product)
5
uneffective
5
unfitted(useless, unfit, impotence)
5
unskilled(weak, inadequate, feeble, incompetent)
5
unsuitable(weak, inadequate, feeble, useless)
4
counterproductive(poor, base, stupid, inferior)
4
disabled(useless, unfit, impotence)
4
effete(weak, inadequate, incompetent, inept)
4
failed(vain, unsuccessful, futile, unproductive)
4
faulty(weak, poor, inadequate, feeble)
4
flabby(weak, poor, inadequate, feeble)
4
forceless(weak, inferior, inadequate, feeble)
4
inexpert(weak, inadequate, feeble, incompetent)
4
irresolute(weak, soft, feeble, mediocre)
4
otiose(useless, trivial, empty, insufficient)
4
poor(dull, light, weak, soft)
4
shiftless(weak, careless, feeble)
4
toothless(poor, inadequate, useless, ineffectual)
4
unimportant(poor, base, inferior, insignificant)
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APASmart Define. (2016). ineffective thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ineffective/thesaurus/synonyms
ChicagoSmart Define. 2016. "ineffective thesaurus" https://smartdefine.org/ineffective/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, ineffective thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ineffective/thesaurus/synonyms>.
MLASmart Define. "ineffective thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/ineffective/thesaurus/synonyms>