Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “Big Brother”

Big Brother

noun [C usually sing]  /ˈbɪɡ ˈbrʌð·ər/ us  
a government or person in authority that tries to control people’s behavior and thoughts
(Definition of Big Brother from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of Big Brother?
Add Cambridge dictionaries to your browser to your website

Definitions of “Big Brother” in other dictionaries

Translations of “Big Brother”

Word of the Day


to throw or drop something carelessly

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