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
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
Levi: Rebecca’s foster brother sure seems like he is out for revenge and pretty much assumes that Annalise is responsible for his sister’s death, so maybe he is the one who shot her.
From Los Angeles Times • Nov. 6, 2015
As Victoria asks Amanda’s foster brother for help with her charitable foundation, Emily seizes an opportunity to settle a score with someone from her past.
From Seattle Times • Mar. 20, 2013
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.