10
barren(adjective, weak, slight, poor, thin)
10
meager(adjective, close, mean, light, weak)
10
niggardly(adjective, weak, poor, small, miserable)
10
unqualified(adjective, weak, ability, poor, short)
9
disappointing(adjective, bad, poor, sad, offensive)
9
failing(adjective, close, light, weak, poor)
9
second-rate(adjective, weak, poor, miserable, inferior)
9
sketchy(adjective, rough, informal, incompetent, insufficient)
9
slight(adjective, mean, weak, soft, gentle)
9
unable(adjective, weak, skill, inferior, limited)
9
unsound(adjective, bad, poor, small, insignificant)
9
worthless(adjective, mean, light, weak, moving)
8
bare(adjective, close, light, slight, poor)
8
fatuous
8
inappropriate(adjective, insignificant, unimportant, useless, trivial)
8
inapt(adjective, poor, inappropriate, incompetent, insufficient)
8
inept(adjective, weak, poor, inferior, limited)
8
lousy(adjective, rough, poor, sad, inferior)
8
pitiful(adjective, mean, moving, slight, poor)
8
shabby(adjective, mean, weak, slight, poor)
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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>