77 entries under useless topic. ×

6
impracticable(adjective, unfit)
6
incompetent(adjective, immoral, improper, unfit)
6
unserviceable(adjective, unfit)
5
faulty(adjective, weak, wrong, false, feeble)
5
impractical(adjective, unfit)
5
ineffective(adjective, weak, inadequate, feeble)
5
inharmonious(adjective, wrong, false, strange, proper)
5
uncongenial(adjective, disagreement, inadequate, inappropriate)
5
unmeet(adjective, dull, wrong, flat, slow)
5
untenable(adjective, unfit, unacceptable)
5
unworkable
5
useless(adjective, bad, poor, inadequate)
4
futile
4
good-for-nothing(adjective, unfit, worthless, unworthy)
4
nonfunctional
4
unlikely(adjective, inadequate, inappropriate, unhealthy)
3
unable(adjective, dull, flat, slow, awkward)
2
dull(adjective, flat, slow, stupid, awkward)
2
ill-adapted(adjective, dull, flat, slow, awkward)
2
mistaken(adjective, wrong, false, inadequate)
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APASmart Define. (2016). unsuitable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unsuitable/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsuitable thesaurus" https://smartdefine.org/unsuitable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, unsuitable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unsuitable/thesaurus/synonyms>.
MLASmart Define. "unsuitable thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/unsuitable/thesaurus/synonyms>