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Synonyms

inefficient

American  
[in-i-fish-uhnt] / 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.


inefficient British  
/ ˌɪnɪˈfɪʃənt /

adjective

  1. unable to perform a task or function to the best advantage; wasteful or incompetent

  2. unable to produce the desired result

"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

Related Words

See incapable.

Other Word Forms

  • inefficiency noun
  • inefficiently adverb

Etymology

Origin of inefficient

First recorded in 1740–50; in- 3 + efficient

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Coal plants, which can’t easily shut down and restart, either operate at a loss during those hours or ramp down to levels that are inefficient and cause mechanical wear and tear, Dorris said.

From The Wall Street Journal

What struck me most was the assumption beneath it all: that stopping to eat is not indulgent or inefficient, but necessary.

From Salon

A spokesperson for the Ministry of Housing, Communities and Local Government said: "We want to work with local councils to deliver our ambition to simplify local government and end inefficient two-tier structures, including in Essex."

From BBC

Ordinary Saudis, royals and officials close to Crown Prince Mohammed told me during a two-week visit to Riyadh that he understands he moved too fast and created inefficient spending.

From The Wall Street Journal

In opposition to the efficient-market hypothesis, which holds that stock prices reflect all available information, Haugen argued that “the pathetically inefficient market doesn’t seem to have a clue as to what is going on.”

From The Wall Street Journal