Old Irish ligid

← Proto-Celtic *ligeti (inherited)

← Proto-Indo-European *leyǵʰ- (root)

← Proto-Indo-European *léyǵʰti (inherited)

→ English lick (cognate)

→ Welsh llyfu (cognate)

→ Persian لیسیدن (cognate)

→ Irish ligh (inherited)

→ Scottish Gaelic ligh (inherited)