46 entries under inadequate topic. ×

15
useless(adjective, weak, inferior, limited)
11
ineffectual(adjective, weak, stupid, idle)
10
inefficacious(adjective, weak, skill, inferior)
9
idle(adjective, action, calm, dull, weak)
8
void(adjective, inferior, feeble, useless)
7
bootless(adjective, weak, stupid, inferior)
7
futile(adjective, weak, stupid, inferior)
7
vain(adjective, weak, stupid, inferior)
6
barren(adjective, limited, feeble, useless)
6
fruitless(adjective, weak, stupid, inferior, idle)
6
unavailing(adjective, weak, stupid, inferior, idle)
6
worthless(adjective, weak, stupid, inferior)
5
nugatory(adjective, inferior, limited, feeble)
4
inefficient(weak, skill, inferior, feeble)
4
null(adjective, inferior, limited, feeble)
4
null and void(expression, adjective, idiom, inferior)
4
unfruitful(adjective, inferior, limited, feeble)
4
unproductive(adjective, weak, stupid, idle)
3
abortive(weak, stupid, inferior, idle)
3
incompetent(weak, skill, stupid, idle)
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APASmart Define. (2016). inoperative thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/inoperative/thesaurus/synonyms
ChicagoSmart Define. 2016. "inoperative thesaurus" https://smartdefine.org/inoperative/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, inoperative thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/inoperative/thesaurus/synonyms>.
MLASmart Define. "inoperative thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/inoperative/thesaurus/synonyms>