inefficient

adjective/ɪnɪˈfɪʃənt/

Frequency rank: #8,026 most common English word

Meaning

not making the best use of time, resources, or effort; wasteful.

Illustration for the English word “inefficient”

Example sentence

The old heating system in the building is extremely inefficient and wastes a lot of energy.

Synonyms & related words

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