Welsh ddoe

← Breton dec’h (cognate)

← Proto-Celtic *desi (inherited)

← German gestern (cognate)

← English yester (cognate)

← Scottish Gaelic an-dè (cognate)

← Ancient Greek χθές (cognate)

← Proto-Indo-European *dʰǵʰyes- (inherited)

← Cornish de (cognate)

← Sanskrit ह्यस् (cognate)

← Albanian dje (cognate)

← Middle Welsh doe (inherited)

← Middle Welsh does (mention)

→ Welsh doe (mention)

→ Welsh echdoe (affix)

→ Albanian dje (cognate)