333 entries under adjective topic. ×

47
ineffective(dull, light, weak, soft)
35
useless(weak, poor, failure, base)
30
unavailing(weak, poor, failure, base)
29
futile(weak, poor, base, careless)
26
feeble(dull, strong, light, weak)
25
impotent(strong, weak, ability, poor)
24
unproductive(weak, poor, base, silly)
23
inefficient(weak, thin, delicate, failure)
22
pointless(poor, base, inferior, insignificant)
22
weak(dull, strong, light, soft)
21
bootless(useless, arouse bad feelings, feature, state)
20
fruitless(weak, failure, silly, stupid)
20
vain(weak, stupid, insignificant, inadequate)
20
worthless(weak, poor, base, careless)
19
inefficacious(skill, affect, inadequate, feeble)
18
abortive(failure, stupid, inadequate, feeble)
18
incompetent(weak, poor, thin, delicate)
16
inadequate(dull, mean, strong, light)
16
unsuccessful(weak, inadequate, limited, feeble)
14
idle(weak, stupid, inadequate, limited)
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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>