8
spare(adjective, close, light, slight, poor)
8
sterile(adjective, weak, poor, short, incompetent)
8
substandard(adjective, weak, rough, poor, nasty)
7
depleted(adjective, poor, small, insignificant, unimportant)
7
flawed(adjective, poor, deficient, broken, incomplete)
7
inappreciable(adjective, light, insignificant, unimportant, useless)
7
inconsiderable(adjective, mean, weak, soft, slight)
7
inefficient(adjective, weak, thin, delicate, inferior)
7
insignificant(adjective, mean, light, weak, soft)
7
insubstantial(adjective, dull, light, weak, soft)
7
invalid(adjective, bad, poor, false, useless)
7
little(adjective, close, light, slight, poor)
7
not enough(expression, adjective, idiom, poor, inferior)
7
not good
7
stingy(adjective, poor, small, insignificant, unimportant)
7
trifling(adjective, mean, light, weak, soft)
7
unacceptable(adjective, bad, rough, poor, nasty)
7
unequal(adjective, weak, ability, poor, inferior)
6
awful(adjective, rough, poor, sad, unhappy)
6
exiguous(adjective, close, light, weak, slight)
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APASmart Define. (2016). inadequate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inadequate/thesaurus/synonyms
ChicagoSmart Define. 2016. "inadequate thesaurus" https://smartdefine.org/inadequate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, inadequate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inadequate/thesaurus/synonyms>.
MLASmart Define. "inadequate thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/inadequate/thesaurus/synonyms>