colloquialdated termusually written using kana alone
Slang term from youth culture, especially associated with the ヤンキー subculture. Dated, now mostly used nostalgically or in period pieces. Often implies a very tight, almost family-like bond.
Slang for 'friend', from たち (達). マブダチ intensifies it with マブ (true/real).
Etymology
From マブ (mabu, 'true/real', slang) + ダチ (dachi, inversion of たち (tachi), a suffix indicating companionship). The exact origin of マブ is uncertain, but it is associated with ヤンキー slang.
