brother
A1Neutral to informal (when used as a term of address).
Definition
Meaning
A male sibling; a boy or man who shares one or both parents with another person.
A male member of a religious order, fraternity, or close-knit group; a fellow human being, especially a man, considered in relation to others; used as a term of address for a man, often expressing camaraderie or solidarity.
Linguistics
Semantic Notes
Primarily denotes a familial relationship but is widely extended metaphorically to signify close bonds, equality, or shared identity within groups (e.g., religious, fraternal, ethnic, or ideological). The plural 'brethren' is archaic or specialized for religious/formal fraternal contexts.
Dialectal Variation
British vs American Usage
Differences
Minimal. 'Bro' as a colloquial term of address is slightly more prevalent and earlier in American usage. The phrase 'big brother' (from Orwell) is capitalized ('Big Brother') in both varieties when referring to the surveillance state.
Connotations
In both varieties, carries strong connotations of loyalty, protection, and shared experience. In African American Vernacular English (AAVE), 'brother' or 'bro' is a central term of solidarity.
Frequency
Equally high-frequency in both dialects. The abbreviated form 'bro' is common in informal speech globally, with similar frequency.
Vocabulary
Collocations
Grammar
Valency Patterns
[possessive] + brother (e.g., my brother)brother + [of + NP] (e.g., brother of the king)brother + [to + NP] (e.g., a brother to me)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Big Brother is watching you”
- “brother in arms”
- “every man is my brother”
- “Am I my brother's keeper?”
Usage
Context Usage
Business
Rare in formal business contexts except metaphorically in 'brother company' (affiliate). 'Bro' is unprofessional.
Academic
Used in sociological, anthropological, or literary studies discussing kinship, fraternity, or metaphors of brotherhood.
Everyday
Extremely common for family reference and informal address among male friends.
Technical
In biology/genetics: 'full brother', 'half-brother', 'three-quarter brother'. In monastic/religious orders: a title.
Examples
By Part of Speech
verb
British English
- To brother someone is an archaic verb meaning to treat as a brother.
American English
- The term is rarely used as a verb; 'to brother' is obsolete.
adverb
British English
- 'Brotherly' can function as an adverb in a non-standard way (e.g., 'He acted brotherly').
American English
- Identical to British usage; 'brotherly' as an adverb is informal.
adjective
British English
- There is no standard adjective form; 'brotherly' is used.
- They showed brotherly affection.
American English
- Same as British; 'brotherly' is the adjectival form.
- A brotherly hug.
Examples
By CEFR Level
- My brother is tall.
- I have one brother and one sister.
- Hello, brother!
- He's like a brother to me.
- My older brother helps me with homework.
- We are brothers in the same football club.
- Despite being brothers, they have completely opposing political views.
- The monk was addressed as 'Brother John'.
- The tragedy brought the community together as brothers.
- The concept of universal brotherhood underpins many humanitarian philosophies.
- He was her half-brother, sharing only a father.
- The fraternity's members swore an oath of brotherly loyalty.
Learning
Memory Aids
Mnemonic
Think of 'bro' and 'ther' (like 'other') – a 'bro' who is your 'other' close family member.
Conceptual Metaphor
KINSHIP IS CLOSENESS / SOLIDARITY IS BROTHERHOOD (e.g., 'brothers in struggle', 'band of brothers').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not use 'братан' (bratan) style in formal English; it maps to very colloquial 'bro'.
- The religious term 'брат' (brat) is accurately translated as 'brother'.
- Avoid translating 'братишка' (bratishka) as 'little brother' unless the diminutive meaning is crucial; often just 'brother'.
Common Mistakes
- Using 'brethren' as a singular noun (it is plural).
- Confusing 'brother-in-law' (spouse's brother or sister's husband) with 'stepbrother' (parent's spouse's son).
- Overusing 'bro' in formal writing.
Practice
Quiz
In which context is the plural 'brethren' still commonly used?
FAQ
Frequently Asked Questions
Yes, 'bro' is a widely accepted, informal clipping of 'brother', used as a term of address or reference, especially among young men. It is considered colloquial.
A stepbrother is related through the marriage of your parent to his parent, with no biological link. A half-brother shares one biological parent with you.
Yes, it is commonly used metaphorically to denote close friendship, solidarity (e.g., 'brother in arms'), membership in a group (e.g., fraternity brother), or as a general term of address implying camaraderie.
The verb 'to brother' (meaning to treat as a brother) is archaic and virtually never used in modern English. The adjectival form 'brotherly' is standard.
Collections
Part of a collection
Family Members
A1 · 44 words · Words for family, people and relationships at home.