Norwegian Bokmål a fortiori

← Proto-Indo-European *bʰerǵʰ- (root)

← Proto-Indo-European *h₂epó (derived)

← Proto-Indo-European *bʰerǵʰ- (derived)

← Proto-Italic *ab (derived)

← Proto-Italic *forktis (derived)

← Latin ā (borrowed)

← Latin ab (mention)

← Latin fortiōrī (mention)

← Latin fortis (mention)