big brother
noun
an elder brother.
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big brother
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Big Brother
Big Brothernouna person, organization, etc, that exercises total dictatorial control
big brother
Americannoun
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an elder brother.
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(sometimes initial capital letters) a man who individually or as a member of an organized group undertakes to sponsor or assist a boy in need of help or guidance.
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(usually initial capital letters) the head of a totalitarian regime that keeps its citizens under close surveillance.
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(usually initial capital letters) the aggregate of officials and policy makers of a powerful and pervasive state.
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Citizens Band Radio Slang. a police officer or police car.
Big Brother
British
noun
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a person, organization, etc, that exercises total dictatorial control
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a television gameshow format in which a small number of people living in accommodation sealed off from the outside world are constantly monitored by TV cameras. Viewers vote each week to expel a person from the group until there is only one person left, who wins a cash prize
Usage
What does Big Brother mean? A big brother can be an older male, related or not, who protects a younger person. Big Brother (usually uppercase) also refers to an omnipresent, usually governmental authority that monitors everyone's every move. How is Big Brother pronounced?[ big bruhth-er ]
Etymology
Origin of big brother
1860–65; 1949 big brother for defs. 3, 4, the epithet of a dictator in G. Orwell's novel 1984
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
At other times, Jeremy is sweet and docile, playing the big brother role with no difficulty.
From Salon • May 25, 2026
"She is perfect and healthy, and her big brother is joyfully adjusting to life with his new baby sister. We are enjoying every moment in our blissful newborn bubble."
From Barron's • May 7, 2026
Julian might also want to help his big brother gain a few pounds at the dinner table.
From Los Angeles Times • Apr. 22, 2026
When he tells stories he’s too young to remember, his sister enters the story to offer detail and, of course, remind us of how good her big brother is.
From Slate • Feb. 25, 2026
“You’re an amazing big brother and the best son I could ever want.”
From "Isaiah Dunn Is My Hero" by Kelly J. Baptist
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
