4
relatives
3
brethren
3
brother
3
buddies(noun, friends, associates, mates)
3
siblings
2
fellows
2
friends
2
sisters
1
bros
1
chums
1
colleagues
1
collegemen
1
compeers
1
comrades
1
cousins
1
dudes(noun, friends, mates, pals, chums)
1
friar
1
friars
1
in the middle(expression, idiom)
1
mates
11 years ago|2.1k views|share |citing 
APASmart Define. (2015). brothers thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/brothers/thesaurus/synonyms
ChicagoSmart Define. 2015. "brothers thesaurus" https://smartdefine.org/brothers/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, brothers thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/brothers/thesaurus/synonyms>.
MLASmart Define. "brothers thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/brothers/thesaurus/synonyms>