Welsh pwyll

← Proto-Brythonic *puɨll (inherited)

← Proto-Celtic *kʷēslā (inherited)

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

← Sanskrit चित्त (cognate)

→ Welsh gwyddbwyll (compound)

→ Welsh pwyllgor (compound)

→ Irish ciall (cognate)

→ Scottish Gaelic ciall (cognate)

→ Old Irish cíall (cognate)