Irish bóthar

← Proto-Celtic *bowitros (inherited)

← Proto-Celtic *bāus (mention)

← Proto-Celtic *itos (mention)

← Welsh beidr (cognate)

← Ancient Greek βαίνω (cognate)

← Proto-Indo-European *h₁itós (derived)

← Proto-Indo-European *gʷem- (mention)

← Old Irish bóthar (inherited)

→ English boreen (mention)

→ Irish bóithrín (affix)

→ Irish mórbhóthar (affix)

→ Irish fobhóthar (affix)

→ Irish crosbhóthar (affix)

→ Irish cuarbhóthar (affix)

→ Irish seachbhóthar (affix)

→ Irish sliosbhóthar (affix)

→ Irish trébhóthar (affix)

→ Yola boagher (borrowed)