13
insufficiently(adverb, badly, halfway, slightly, somewhat)
11
poorly(adverb, badly, weakly, carelessly, scarcely)
10
deficiently(adverb, insufficiently, imperfectly, deficiently)
8
defectively(adverb, badly, poorly, weakly, meanly)
8
imperfectly(adverb, badly, poorly, softly, wrongly)
8
unsatisfactorily(adverb, badly, poorly, weakly, softly)
8
unsuitably(adverb, incorrectly, uselessly)
7
faultily(adverb, badly, poorly, softly, wrongly)
7
incompletely(adverb, badly, halfway, slightly, somewhat)
6
badly
6
incompetently(adverb, impotently)
5
incapably(adverb, imperfectly, feebly, impotently)
5
ineptly
5
scantily(adverb, insufficiently)
4
feebly(adverb, badly, poorly, weakly, softly)
4
inappropriately(adverb, incorrectly)
4
inaptly
4
inefficiently(adverb, poorly, weakly, slowly, scarcely)
4
scarcely(adverb, insufficiently)
4
unacceptably
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APASmart Define. (2015). inadequately thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/inadequately/thesaurus/synonyms
ChicagoSmart Define. 2015. "inadequately thesaurus" https://smartdefine.org/inadequately/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, inadequately thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/inadequately/thesaurus/synonyms>.
MLASmart Define. "inadequately thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/inadequately/thesaurus/synonyms>