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Synonyms

brethren

American  
[breth-rin] / ˈbrɛð rɪn /

plural noun

  1. fellow members.

  2. Archaic. brothers.


brethren British  
/ ˈbrɛðrɪn /

plural noun

  1. archaic a plural of brother

  2. fellow members of a religion, sect, society, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See brother.

Explanation

Brethren is a fancy plural form of "brother" and is most often used in religious contexts. A monk might refer to other monks in a monastery as his brethren. Though it literally means "brothers," brethren frequently refers to members of the same religious community. You'll also see the word used more broadly today to refer to male members of fraternal organizations, or any group of people with close social ties. Thomas Paine used it to argue for democracy when he wrote, “The world is my country, all mankind are my brethren, and to do good is my religion.”

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Vocabulary lists containing brethren

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.

The U.S. players have made it abundantly clear that they respect their Canadian brethren.

From Los Angeles Times • Feb. 27, 2026

Our chickens, on the other hand, are treated abominably, packed in tightly with their germy brethren, raised in squalor, pumped with hormones, and only made clean at the end.

From Slate • Feb. 13, 2026

Even as its Big Tech brethren collect AI equipment, Apple is sticking to its rather asset-light ways.

From Barron's • Oct. 31, 2025

Maybe you’re learning how to work more efficiently with the aid of ChatGPT and its robotic brethren.

From The Wall Street Journal • Oct. 2, 2025

Nevertheless, the weasels, and their brethren the stoats and ferrets, argued their case hotly.

From "Redwall" by Brian Jacques