4
unpropitious(adjective, bad, poor, awkward, inappropriate)
4
unreasonable(adjective, improper, excessive, unwarranted, unfair)
4
unwise
4
weak(adjective, poor, inadequate, feeble, cheap)
3
absurd(adjective, strange, odd, ridiculous, incompatible)
3
anomalous(wrong, improper, unacceptable, unsuited)
3
clashing(adjective, proper, inappropriate, antagonistic, discordant)
3
conflicting(adjective, strange, odd, inappropriate, antagonistic)
3
contradictory(adjective, strange, odd, inappropriate, antagonistic)
3
contrary(adjective, antagonistic, discordant, contradictory, unsuited)
3
disadvantageous(adjective, inexpedient)
3
exceptionable
3
flawed(adjective, wrong, false, improper, incorrect)
3
ill-fitted(adjective, dull, wrong, flat, slow)
3
impolitic
3
imprudent(wrong, false, awkward, unfitting, inopportune)
3
incommensurable
3
incongruent(adjective, strange, irregular, improper, odd)
3
inefficient(adjective, weak, feeble, immoral, unprincipled)
3
inferior(adjective, unacceptable)
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APASmart Define. (2016). unsuitable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unsuitable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsuitable thesaurus" https://smartdefine.org/unsuitable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, unsuitable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unsuitable/thesaurus/synonyms>.
MLASmart Define. "unsuitable thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/unsuitable/thesaurus/synonyms>