köken: Clipping of சகோதரன் (cakōtaraṉ, “brother”), from Sanskrit सहोदर (sahodara).
Etimoloji
Etymology tree Esperanto frato Esperanto -ĉjo Esperanto fraĉjo From frato (“brother”) + -ĉjo (affectionate male diminutive, applied to the first or first two syllables of the word).