223 entries under adjective topic. ×

1
infirm(weak, thin, delicate, shaky)
1
inproficient(weak, inadequate, unfit, unqualified)
1
insubstantial(weak, poor, low, thin)
1
kaput(useless, unfit)
1
lemon(noun, weak, poor, low)
1
limited(weak, poor, inferior, inadequate)
1
loser(noun, beat, useless, bomb)
1
losing(weak, inadequate, unfit, unqualified)
1
low(weak, poor, thin, delicate)
1
naive(weak, inadequate, unfit, unqualified)
1
non-effective(useless, unfit)
1
non-serviceable(useless, unfit)
1
noneffective(useless, unfit)
1
not cut out for(expression, idiom, weak, inadequate)
1
not have it(expression, idiom, useless, inept)
1
not prepared(expression, ignorant, inexperienced, uninformed)
1
novice
1
out-of-use(useless, unfit)
1
out of gas(expression, idiom, weak, thin)
1
out to lunch(expression, idiom, useless, inept)
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APASmart Define. (2016). incompetent thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/incompetent/thesaurus/synonyms
ChicagoSmart Define. 2016. "incompetent thesaurus" https://smartdefine.org/incompetent/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, incompetent thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/incompetent/thesaurus/synonyms>.
MLASmart Define. "incompetent thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/incompetent/thesaurus/synonyms>