Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “back”


adverb     /bæk/
in return or reply : I'm busy at the moment - can I call you back? I e-mailed the customer services department and they said they would get back to me tomorrow .
(Definition of back adverb from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of back

Definitions of “back” in other dictionaries

Word of the Day


the art and knowledge involved in preparing and eating good food

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