Is a foster brother the same as an adopted brother?

No. A foster brother is part of a temporary or permanent care arrangement, often without a change in legal parental rights. An adopted brother is legally made a permanent member of the family.

Can I just say 'brother' instead of 'foster brother'?

Yes, if the distinction isn't important in the context. Many people refer to their foster siblings simply as brothers or sisters, especially if the bond is strong.

Do you hyphenate 'foster brother'?

It is commonly written without a hyphen ('foster brother'), though 'foster-brother' is an accepted variant, especially when used attributively (e.g., a foster-brother relationship).

Is “foster brother” formal?

Foster brother is usually formal / semi-formal in register.

How do you pronounce “foster brother”?

Foster brother: in British English it is pronounced /ˈfɒstə ˌbrʌðə(r)/, and in American English it is pronounced /ˈfɑːstər ˌbrʌðər/. Tap the audio buttons above to hear it.

foster brother: meaning, definition, pronunciation and examples

UK/ˈfɒstə ˌbrʌðə(r)/US/ˈfɑːstər ˌbrʌðər/

Formal / Semi-formal

My Flashcards

Quick answer

What does “foster brother” mean?

A male with whom one shares a non-biological sibling relationship because they were raised in the same foster family.

Audio

Pronunciation

Definition

Meaning and Definition

A male with whom one shares a non-biological sibling relationship because they were raised in the same foster family.

A male unrelated by blood who is considered a brother due to being raised together in the same household under a system of foster care, either temporarily or permanently. Can sometimes be used more loosely to refer to a close male friend raised alongside one from childhood.

Dialectal Variation

British vs American Usage

Differences

Term and concept are identical. The legal framework and prevalence of the foster care system may differ, but the lexical item does not.

Connotations

Carries connotations of a chosen, non-biological family bond, often involving overcoming difficult circumstances together.

Frequency

Slightly more common in contexts discussing social services, family law, or personal memoirs. Not a high-frequency everyday word for most speakers.

Grammar

How to Use “foster brother” in a Sentence

[Person A] + [have/be] + foster brother + [Person B]The foster brother of [Person X]grew up with + possessive + foster brother

Vocabulary

Collocations

strong

my foster brotherher foster brothergrew up with my foster brother

medium

close foster brotherchildhood foster brotherbond with my foster brother

weak

former foster brotherloyal foster brotherfoster brother and sister

Usage

Meaning in Context

Business

Not applicable.

Academic

Used in sociology, social work, psychology, and legal studies discussing family structures, child welfare, and kinship.

Everyday

Used when describing one's family background to friends or acquaintances.

Technical

Used in social work, legal documents, and case files to specify a familial relationship within the foster care system.

Vocabulary

Synonyms of “foster brother”

Neutral

foster sibling (male)

Weak

brother from foster carenon-biological brother (if context clarifies)

Vocabulary

Antonyms of “foster brother”

biological brotherfull brother

Watch out

Common Mistakes When Using “foster brother”

Using 'foster brother' to mean a very close friend with no shared upbringing. Confusing it with 'stepbrother' (related by parent's marriage) or 'adopted brother' (legally made a son).

FAQ

Frequently Asked Questions

: No. A foster brother is part of a temporary or permanent care arrangement, often without a change in legal parental rights. An adopted brother is legally made a permanent member of the family.
: Yes, if the distinction isn't important in the context. Many people refer to their foster siblings simply as brothers or sisters, especially if the bond is strong.
: 'Foster sister'.
: It is commonly written without a hyphen ('foster brother'), though 'foster-brother' is an accepted variant, especially when used attributively (e.g., a foster-brother relationship).
: A male with whom one shares a non-biological sibling relationship because they were raised in the same foster family.
: Foster brother is usually formal / semi-formal in register.
: Foster brother: in British English it is pronounced /ˈfɒstə ˌbrʌðə(r)/, and in American English it is pronounced /ˈfɑːstər ˌbrʌðər/. Tap the audio buttons above to hear it.

Learning

Memory Aids

Mnemonic

Think of 'fostering' a plant—you care for it without it being grown from your own seed. A 'foster brother' is a brother you care for and are raised with, without sharing biological parents.

Conceptual Metaphor

FAMILY IS A CONSTRUCT (social/emotional bond rather than purely biological).

Practice

Quiz

Fill in the gap

After her parents passed away, she was placed with a new family and gained a wonderful .

Multiple Choice

Which of the following best describes a 'foster brother'?