fraternal
Americanadjective
-
of or befitting a brother or brothers; brotherly.
-
of or being a society of men associated in brotherly union, as for mutual aid or benefit.
a fraternal order; a fraternal association.
adjective
-
of or suitable to a brother; brotherly
-
of or relating to a fraternity
-
designating either or both of a pair of twins of the same or opposite sex that developed from two separate fertilized ova Compare identical
Other Word Forms
Etymology
Origin of fraternal
1375–1425; late Middle English < Latin frātern ( us ) fraternal (derivative of frāter brother ) + -al 1
Compare meaning
How does fraternal compare to similar and commonly confused words? Explore the most common comparisons:
Explanation
Use the adjective fraternal to mean "brotherly," the way you'd describe your fraternal relationship with your oldest friend who is like a brother to you. A fight between brothers? You could chalk it up to fraternal rivalry. Fraternal describes the relationship between brothers, but it is also used is to describe a club, society or fraternity, some brotherly group of people — usually men — with common interests. Fraternal twins, unlike identical twins, are formed from separate ova. That's why they don't look exactly alike and can be a girl and a boy, instead of two girls or two boys.
Vocabulary lists containing fraternal
Lincoln Inaugural Address (March 1861)
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
Vocabulary from Vladimir Putin's Speech on Crimea
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Max in the House of Spies
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
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.
Roughly half of the participants were identical twins, who share all of their genes, while the others were fraternal twins, who share about half.
From Science Daily • May 6, 2026
When community members aren’t arguing, the vibe is generally extremely supportive and fraternal.
From Slate • Mar. 30, 2026
Today, our conversation begins, after fraternal embraces, with a huge burst of laughter.
From The Wall Street Journal • Mar. 18, 2026
At 26, Carpenter is precisely half of Miss Piggy’s age, and yet they could be fraternal twins.
From Salon • Feb. 28, 2026
The first two to Taeyoung and Taemin, fraternal twins, who looked exactly alike except that Taeyoung wore her hair in long braids and Taemin kept his head shaved due to the heat.
From "Finding Junie Kim" by Ellen Oh
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.
