10 entries under defective topic. ×

16
low-performing(adjective, ineffective, impaired, inoperable)
14
unserviceable(adjective, impaired, inoperable, unfunctional, unadaptive)
12
inoperable(adjective, impractical, hopeless, ineffective)
12
unworkable(adjective, impaired, inoperable, unfunctional, unadaptive)
12
disabled(adjective, impaired, inoperable, unfunctional, unadaptive)
12
inoperative(adjective, unadaptive, impaired, inoperable, unfunctional)
8
incapable(adjective, ineffective, impaired, inoperable)
8
incompetent(adjective, weak, stupid, idle, useless)
8
invalid(adjective, ineffective, impaired, inoperable)
7
nonfunctional(adjective, weak, stupid, idle, useless)
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APASmart Define. (2013). dysfunctional thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/dysfunctional/thesaurus/synonyms
ChicagoSmart Define. 2013. "dysfunctional thesaurus" https://smartdefine.org/dysfunctional/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2013, dysfunctional thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/dysfunctional/thesaurus/synonyms>.
MLASmart Define. "dysfunctional thesaurus" 28 June 2013. Web. 23 September 2026. <https://smartdefine.org/dysfunctional/thesaurus/synonyms>