57 entries under feeble topic. ×

1
barren(inadequate, limited, useless, vain)
1
bootless(inferior, inadequate, limited, useless)
1
cowed(adjective, weak, gentle, nervous, shy)
1
defeasible(inferior, inadequate, limited, useless)
1
feckless(inferior, inadequate, limited, useless)
1
fruitless(inferior, inadequate, limited, useless)
1
futile(inferior, inadequate, limited, useless)
1
idle(inferior, inadequate, limited, useless)
1
inefficacious(adjective, inferior, inadequate, limited)
1
inefficient(inferior, inadequate, limited, useless)
1
inferior(inadequate, limited, useless, vain)
1
innocuous(inferior, inadequate, limited, useless)
1
inoperative(inferior, inadequate, limited, useless)
1
lame(adjective, poor, inferior, inadequate, limited)
1
limited(adjective, weak, poor, inferior, inadequate)
1
neutralized(inferior, inadequate, limited, useless)
1
nugatory(inferior, inadequate, limited, useless)
1
null(inferior, inadequate, limited, useless)
1
paltry(inferior, inadequate, limited, useless)
1
unable(inferior, inadequate, limited, useless)
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APASmart Define. (2015). spineless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/spineless/thesaurus/synonyms
ChicagoSmart Define. 2015. "spineless thesaurus" https://smartdefine.org/spineless/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, spineless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/spineless/thesaurus/synonyms>.
MLASmart Define. "spineless thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/spineless/thesaurus/synonyms>