38 entries under invalid topic. ×

15
useless(adjective, weak, inferior, inadequate, limited)
11
ineffectual(adjective, weak, stupid, idle, inadequate)
10
ineffective(adjective, weak, stupid, idle, useless)
7
vain(adjective, weak, stupid, inferior, inadequate)
6
barren(adjective, inadequate, limited, feeble, useless)
6
dead(adjective, calm, dull, cold, still)
6
defunct(adjective, dull, cold, tired, lifeless)
6
fruitless(adjective, weak, stupid, inferior, idle)
6
sterile(adjective, tired, over, lost, finished)
6
worthless(adjective, weak, stupid, inferior, inadequate)
5
nugatory(adjective, inferior, inadequate, limited, feeble)
4
null(adjective, inferior, inadequate, limited, feeble)
4
null and void(expression, adjective, idiom, inferior, inadequate)
4
out of commission(expression, adjective, idiom, dull, weak)
4
unfruitful(adjective, inferior, inadequate, limited, feeble)
3
inanimate(adjective, still, lifeless, inactive, alive)
2
asleep(adjective, calm, dull, gentle, still)
2
bad(adjective, false, unreasonable, unsound, unacceptable)
2
unsuccessful(adjective, inferior, inadequate, limited, feeble)
1
avoided(adjective, meaningless, unsubstantiated, unsupported)
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APASmart Define. (2016). inoperative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inoperative/thesaurus/synonyms
ChicagoSmart Define. 2016. "inoperative thesaurus" https://smartdefine.org/inoperative/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, inoperative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inoperative/thesaurus/synonyms>.
MLASmart Define. "inoperative thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/inoperative/thesaurus/synonyms>