Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “inefficient”


adjective     /ˌɪn.ɪˈfɪʃ.ənt/
C1 not organized, skilled, or able to work in a satisfactory way: Existing methods of production are expensive and inefficient. I'm hopelessly inefficient at mending things.Useless and futile inefficiently     /-li/ adverb The hotel is inefficiently run.Useless and futile inefficiency     /-ə noun [C or U] They were accused of gross inefficiency in their handling of the case.Useless and futile
(Definition of inefficient adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of inefficient

Definitions of “inefficient” in other dictionaries

Word of the Day


physical activity that you do to make your body strong and healthy

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More