Etymology tree Vulgar Latin *brasa Old Galician-Portuguese brasa Portuguese brasa Proto-Indo-European *-elis Proto-Italic *-elis Latin -īlislbor. Portuguese -il Portuguese brasil Portuguese Brasilder. Portuguese Brazilbor. English Brazil Proto-Indo-European *-nós Proto-Italic *-nos Latin -nus Latin -ānus Latin -iānusbor. English -ian English Brazilian From Brazil + -ian.