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inefficient

 
 
/ˌɪnɪˈfɪʃənt/ adjective

Definition

Inefficient people or things waste time, money, or effort, and do not achieve as much as they should: an inefficient heating system
inefficiently adverb inefficiency
 
 
/ˌɪnɪˈfɪʃənsi/ noun [C, U]
(Definition of inefficient adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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