foster brother
Americannoun
Etymology
Origin of foster brother
before 1000; Middle English; Old English fōster brōthor
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.
Her foster brother, Theo, 25, is recording our conversation.
From The Wall Street Journal • Oct. 8, 2025
He extends the love he didn’t have as a child to his foster brother.
From Seattle Times • May 3, 2024
A woman who passed up going to university to care for her autistic foster brother has described how he inspired her to set up her own behavioural therapy centre.
From BBC • Feb. 18, 2023
A rancher’s son gets his foster brother in trouble with an unwed mother’s brothers.
From Los Angeles Times • Jul. 31, 2020
A boy who scrapped with his foster brother one minute and laughed with him the next.
From "An Ember in the Ashes" by Sabaa Tahir
![]()
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.