fraternity

noun

fra·​ter·​ni·​ty frə-ˈtər-nə-tē 

plural fraternities

1

: a group of people associated or formally organized for a common purpose, interest, or pleasure: such as

a

: a fraternal order

b

: guild sense 1

c

: a men's student organization formed chiefly for social purposes having secret rites and a name consisting of Greek letters

d

: a student organization for scholastic, professional, or extracurricular activities

a debating fraternity

2

: the quality or state of being brothers : brotherliness

3

: persons of the same class, profession, character, or tastes

the racetrack fraternity

Synonyms of fraternity

• organization
• association
• institution
• brotherhood
• society
• institute
• chamber

Examples of fraternity in a Sentence

an atmosphere of fraternity and cooperation

a firm believer in community service and a dedicated member of the local fraternity of Good Samaritans

Recent Examples on the Web

The fraternity is launching a national week of action aimed at raising awareness about Andrade’s case, including phonebanks and a GoFundMe for his legal expenses, according to an Instagram post. — Lillie Davidson, Fort Worth Star-Telegram, 21 July 2026

The friend said the group was in town for a fraternity formal. — Caroline Zimmerman, Kansas City Star, 15 July 2026

Mostellar, Hensley and their two fraternity brothers took a trip to the hunting camp, according to CBS affiliate WKRG. — David Chiu, PEOPLE, 2 July 2026

The warning is the second issued by UCSB police since May, when an 18-year-old freshman reported she was raped and strangled after meeting a man at a Sigma Pi fraternity party before returning to her dorm at Tropicana Gardens in Isla Vista. — Stepheny Price, FOXNews.com, 30 June 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing fraternity

• inter-fraternity

Rhymes for fraternity

• eternity
• maternity
• modernity
• paternity
• confraternity
• taciturnity

Kids Definition

fraternity

noun

fra·​ter·​ni·​ty frə-ˈtər-nət-ē 

plural fraternities

1

: a social, honorary, or professional organization

especially : a social club of male college students

2

: brotherhood sense 1, brotherliness