How to say "bro" in Japanese

• ニキ
  noun (suffix)Covers 'bro' as a casual address for a male one relies on; the glosses stress dependability. As internet slang it is less common and suits online talk more than formal writing.
• マイメン
  nounCovers 'bro' in the sense of one's close friend, with the glosses extending to beloved family and respected people. Slang and less common; natural when talking about your closest buddy.

Both are slang and less common: pick 「ニキ」 for the internet-slang 'bro' addressed to a dependable guy, and 「マイメン」 for 'bro' meaning a close friend, beloved family member, or respected person.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• ニキbro
• マイメンclose friend