carelessly (related)
inadequately (related)
efficiently (antonym)
in an inefficient manner
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inefficient (related)
incompetently (related)
Find another word for inefficiently. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for inefficiently, like: ineffectively, wastefully, unproductively, badly, carelessly, inadequately, efficiently, inefficient and incompetently.
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