inefficient

adjective

in·​ef·​fi·​cient ˌi-nə-ˈfi-shənt How to pronounce inefficient (audio)
: not efficient: such as
a
: wasteful of time or energy
inefficient operating procedures
b
: incapable, incompetent
an inefficient worker
c
: not producing the effect intended or desired
inefficient noun
inefficiently adverb

Examples of inefficient in a Sentence

The delivery system was very inefficient. an inefficient use of fuel
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Businesses often overlook the financial consequences of poor hiring decisions or inefficient technology, yet these areas directly affect the bottom line. Raja Walia, Forbes.com, 16 May 2025 The space weather exercise overseen by NOAA found that inefficient communication between space weather experts and other government agencies and stakeholders likely to deal with the fallout of these incidents could lead to incorrect conclusions. Tereza Pultarova, Space.com, 16 May 2025 Garland was a non-factor, scoring 11 points on 4-of-16 shooting – including 0-of-6 from three – while Mitchell posted a game-high 35 points on an inefficient 8-of-25 shooting night. Matias Grez, CNN Money, 14 May 2025 One area that Spoelstra needs to address after taking some time to decompress this offseason is the Heat’s inefficient offense. Anthony Chiang, Miami Herald, 13 May 2025 See All Example Sentences for inefficient

Word History

First Known Use

1750, in the meaning defined above

Time Traveler
The first known use of inefficient was in 1750

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Cite this Entry

“Inefficient.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inefficient. Accessed 21 May. 2025.

Kids Definition

inefficient

adjective
in·​ef·​fi·​cient ˌin-ə-ˈfish-ənt How to pronounce inefficient (audio)
1
: not producing the effect expected or desired
inefficient regulations
2
: wasteful of time or energy
inefficient procedures
especially : accomplishing little relative to the time spent or effort expended
an inefficient worker
inefficiently adverb

More from Merriam-Webster on inefficient

Last Updated: - Updated example sentences
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