fra·ter·nal
adjective/frəˈtɜːnl/
/frəˈtɜːrnl/
[usually before noun]- connected with the relationship that exists between people or groups that share the same ideas or interests
（指志趣相投者）兄弟般的，亲如手足的 - a fraternal organization/society
兄弟会组织；共济会
- a fraternal organization/society
- connected with the relationship that exists between brothers
兄弟间的 - fraternal rivalry
兄弟间的较劲
- fraternal rivalry
Word Originlate Middle English: from medieval Latin fraternalis, from Latin fraternus, from frater ‘brother’.