57 entries under feeble topic. ×

1
unavailing(inferior, inadequate, limited, useless)
1
unfruitful(inadequate, limited, useless, vain)
1
unproductive(inadequate, limited, useless, vain)
1
unprofitable(inferior, inadequate, limited, useless)
1
unsuccessful(inferior, inadequate, limited, useless)
1
useless(inferior, inadequate, limited, vain)
1
vain(inferior, inadequate, limited, useless)
1
void(inferior, inadequate, limited, useless)
1
withered(inferior, inadequate, limited, useless)
1
worthless(weak, inferior, inadequate, limited)
0
having cold feet(expression, adjective, idiom, weak, gentle)
0
no go(expression, inadequate, limited, useless)
0
no way(expression, inadequate, limited, useless)
0
not effective(expression, inadequate, limited, useless)
0
slack-spined(inadequate, limited, useless, vain)
0
thin(adjective, weak, poor, inadequate)
0
unavailable(inadequate, limited, useless, vain)
<123>
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APASmart Define. (2015). spineless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/spineless/thesaurus/synonyms
ChicagoSmart Define. 2015. "spineless thesaurus" https://smartdefine.org/spineless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, spineless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/spineless/thesaurus/synonyms>.
MLASmart Define. "spineless thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/spineless/thesaurus/synonyms>