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inefficient

[in-i-fish-uh nt] /ˌɪn ɪˈfɪʃ ənt/
adjective
1.
not efficient; unable to effect or achieve the desired result with reasonable economy of means.
2.
lacking in ability, incompetent.
Origin of inefficient
1740-1750
1740-50; in-3 + efficient
Related forms
inefficiently, adverb
Synonyms
2. See incapable.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for inefficient

inefficient

/ˌɪnɪˈfɪʃənt/
adjective
1.
unable to perform a task or function to the best advantage; wasteful or incompetent
2.
unable to produce the desired result
Derived Forms
inefficiency, noun
inefficiently, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for inefficient
adj.

1750, "not producing the desired effect," from in- (1) "not, opposite of" + efficient. Related: Inefficiency (1749); inefficiently.

Online Etymology Dictionary, © 2010 Douglas Harper
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