1
indecisive(adjective, doubtful)
1
indefinite(adjective, doubtful)
1
indeterminate(adjective, doubtful)
1
indistinct(adjective, doubtful)
1
inopportuneness
1
insecure(adjective, doubtful)
1
inutile(adjective, useless, unfit)
1
invalid(adjective, useless, unfit)
1
irreducible
1
irritating
1
kaput(adjective, useless, unfit)
1
lubber
1
maladroit(useless, incompetent, unqualified, inept, clumsy)
1
mediocre
1
misclassified
1
mismated
1
non-effective(adjective, useless, unfit)
1
non-serviceable(adjective, useless, unfit)
1
noneffective(adjective, useless, unfit)
1
not cut out for(expression, idiom, useless, incompetent, unqualified)
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APASmart Define. (2016). unapt thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unapt/thesaurus/synonyms
ChicagoSmart Define. 2016. "unapt thesaurus" https://smartdefine.org/unapt/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, unapt thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unapt/thesaurus/synonyms>.
MLASmart Define. "unapt thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/unapt/thesaurus/synonyms>