76 entries under feeble topic. ×

12
barren(adjective, weak, poor, base, inferior)
12
inept(adjective, weak, poor, stupid, idle)
12
spineless(adjective, weak, soft, poor, uncertain)
11
cowardly(adjective, weak, soft, uncertain, unstable)
11
inoperative(adjective, weak, stupid, idle, inadequate)
10
feckless(adjective, stupid, idle, inadequate)
9
nugatory(adjective, poor, failure, base, inferior)
8
paltry(adjective, weak, poor, thin, delicate)
8
unprofitable(adjective, poor, base, silly, stupid)
7
forceless(adjective, weak, inadequate, limited)
7
meaningless(adjective, weak, poor, base, careless)
7
unfruitful(adjective, weak, inadequate, limited)
5
irresolute(adjective, weak, soft, uncertain, unstable)
5
lame(adjective, weak, poor, thin, delicate)
5
void(adjective, inadequate, limited, useless)
4
aimless(adjective, weak, careless, insignificant)
4
irresponsible(adjective, weak, careless)
4
null(adjective, inferior, inadequate, limited)
3
good-for-nothing(adjective, weak, poor, base, careless)
3
inferior(adjective, poor, base, miserable, insignificant)
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APASmart Define. (2016). ineffectual thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/ineffectual/thesaurus/synonyms
ChicagoSmart Define. 2016. "ineffectual thesaurus" https://smartdefine.org/ineffectual/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, ineffectual thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/ineffectual/thesaurus/synonyms>.
MLASmart Define. "ineffectual thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/ineffectual/thesaurus/synonyms>