5
inadequately(adverb, poorly, weakly, slowly, scarcely)
5
ineptly
3
incapably
3
incompetently
3
ineffectually(adverb, poorly, weakly, scarcely, inadequately)
3
inexpertly
2
inaptly
2
ineffectively
2
inefficaciously
2
roughly
2
unably
2
wastefully
1
amateurishly
1
awkwardly
1
badly(adverb, poorly, scarcely)
1
clumsily
1
crudely
1
fecklessly
1
fruitlessly
1
futilely
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APASmart Define. (2015). inefficiently thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/inefficiently/thesaurus/synonyms
ChicagoSmart Define. 2015. "inefficiently thesaurus" https://smartdefine.org/inefficiently/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, inefficiently thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/inefficiently/thesaurus/synonyms>.
MLASmart Define. "inefficiently thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/inefficiently/thesaurus/synonyms>