myEtymology.com: Portuguese etymology of regra

Etymology of the Portuguese word regra

the Portuguese word regra

derived from the Classical Latin word regula (ruler, straight edge; basic principle)

using the Proto-Indo-European prefix reg- (to move in a straight line)

Dutch regel, English rule, French règle, German Regel, Icelandic regla, Italian regola, Latin regula, Polish reguła, Provençal regla, Spanish regla, Swedish regel, Yiddish regl