509 entries under adjective topic. ×

6
inefficacious(skill, feeble, useless, unfit)
6
inoperative(limited, feeble, useless, inept)
6
mediocre(bad, weak, poor, miserable)
6
miserly(poor, incompetent, insufficient, meager)
6
parsimonious(poor, incompetent, insufficient, scarce)
6
rotten(bad, weak, poor, nasty)
6
spineless(weak, poor, inferior, limited)
6
subpar(weak, poor, miserable, inferior)
6
too little(expression, idiom, poor, inferior)
6
unproductive(weak, slight, poor, thin)
6
unsubstantial(dull, light, weak, soft)
6
wretched(mean, bad, moving, poor)
5
crude(weak, rough, poor, miserable)
5
displeasing
5
disproportionate(inappropriate, unfit, unacceptable, unbecoming)
5
dry(poor, incompetent, insufficient, deficient)
5
impractical(useless, unfit, hopeless, unusable)
5
improper(useless, inappropriate, incorrect, unfit)
5
pale(dull, light, soft, poor)
5
petty(mean, light, moving, slight)
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APASmart Define. (2016). inadequate thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/inadequate/thesaurus/synonyms
ChicagoSmart Define. 2016. "inadequate thesaurus" https://smartdefine.org/inadequate/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, inadequate thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/inadequate/thesaurus/synonyms>.
MLASmart Define. "inadequate thesaurus" 29 March 2016. Web. 27 September 2026. <https://smartdefine.org/inadequate/thesaurus/synonyms>