45 entries under limited topic. ×

1
defeasible(inferior, inadequate, feeble, useless)
1
feckless(inferior, inadequate, feeble, useless)
1
forceless(adjective, weak, inferior, inadequate)
1
idle(adjective, weak, inferior, inadequate)
1
indecisive(weak, inferior, inadequate, feeble)
1
innocuous(inferior, inadequate, feeble, useless)
1
lame(inferior, inadequate, feeble, useless)
1
neutralized(inferior, inadequate, feeble, useless)
1
nugatory(inferior, inadequate, feeble, useless)
1
null(inferior, inadequate, feeble, useless)
1
paltry(inferior, inadequate, feeble, useless)
1
spineless(inferior, inadequate, feeble, useless)
1
unavailable(inadequate, feeble, useless, vain)
1
unfruitful(adjective, weak, inferior, inadequate)
1
unproductive(adjective, weak, inferior, inadequate)
1
unprofitable(inferior, inadequate, feeble, useless)
1
unsuccessful(weak, inferior, inadequate, feeble)
1
vain(weak, inferior, inadequate, feeble)
1
void(inferior, inadequate, feeble, useless)
1
withered(inferior, inadequate, feeble, useless)
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APASmart Define. (2016). unable thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unable thesaurus" https://smartdefine.org/unable/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, unable thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unable/thesaurus/synonyms>.
MLASmart Define. "unable thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/unable/thesaurus/synonyms>