efficient

Pronunciation

• (UK) IPA ^(key): /ɪˈfɪʃənt/
• (US) (Canada) IPA ^(key): /əˈfɪʃənt/

• Audio (US)

  (file)

Adjective

Positive efficient

Comparative more efficient

Superlative most efficient

1. If something is efficient, it can do a lot but uses very little time, energy, money, etc.
   • Antonym: inefficient

   He wastes a lot of time talking, and isn't very efficient at work.

   Smaller cars are generally more fuel-efficient than big cars.

Related words

• efficiency
• inefficiency
• efficiently
• inefficiently