76 entries under feeble topic. ×

1
vacillating(adjective, weak, soft, uncertain, unstable)
1
withered(inadequate, limited, useless, vain)
0
carefree(weak, careless)
0
flat(weak, thin, incompetent, frail)
0
fustian(weak, careless)
0
incautious(weak, careless)
0
insipid(light, weak, soft, indecisive)
0
no way(expression, inadequate, limited, useless)
0
not effective(expression, inadequate, limited, useless)
0
shiftless(weak, careless)
0
slack-spined(inadequate, limited, useless, vain)
0
uncareful(weak, careless)
0
unprepared(adjective, weak, poor, inadequate)
0
watery(light, weak, soft, indecisive)
0
wavering(adjective, weak, uncertain, nervous, unstable)
0
without purpose(expression, weak, careless)
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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>