Synonyms of brother in English:

brother


See definition of brother

noun

1‘she had a younger brother named William’

SYNONYMS
male sibling
informal bro
British informal bruvver, bruv

2‘they were brothers in crime’

SYNONYMS
colleague, associate, companion, partner, comrade, comrade-in-arms, co-worker, fellow, friend
confrère
informal pal, chum
British informal mate, bruvver, bruv
North American informal bro
archaic compeer

3‘a brother of the Order’

SYNONYMS
monk, cleric, friar, religious, regular, monastic, contemplative