Synonyms|215Antonyms|56|Broader|0Narrower|0Related|93

59 entries under inadequate topic. ×

5
unable(adjective, skill, inferior, limited)
5
unprofitable(adjective, inferior, feeble, useless)
4
idle(adjective, inferior, feeble, useless)
4
lame(adjective, inferior, limited, feeble)
4
unfruitful(adjective, feeble, useless, vain)
3
feeble(adjective, useless, incompetent, vain)
3
forceless(adjective, inferior, limited, feeble)
3
indecisive(adjective, inferior, limited, feeble)
3
inept(adjective, weak, skill, feeble)
3
paltry(adjective, inferior, useless, trivial)
2
inferior(adjective, limited, feeble, useless)
2
innocuous(adjective, inferior, limited, feeble)
2
limited(adjective, inferior, feeble, useless)
2
void(adjective, inferior, useless, trivial)
1
anticlimactic(adjective, inferior, limited, feeble)
1
clumsy(weak, skill, unfit, inept)
1
defeasible(adjective, inferior, limited, feeble)
1
impuissant(weak, skill, unfit, inept)
1
neutralized(adjective, inferior, limited, feeble)
1
no can do(weak, skill, unfit, inept)
For more, visit Inefficacious on Power Thesaurus
10 years ago|3.7k views|share |citing 
APASmart Define. (2016). inefficacious thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/inefficacious/thesaurus/synonyms
ChicagoSmart Define. 2016. "inefficacious thesaurus" https://smartdefine.org/inefficacious/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, inefficacious thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/inefficacious/thesaurus/synonyms>.
MLASmart Define. "inefficacious thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/inefficacious/thesaurus/synonyms>