Old Irish domun

← Proto-Celtic *dubnos (inherited)

← Welsh dwfn (cognate)

← Proto-Indo-European *dʰewbʰ- (root)

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

→ Irish domhan (inherited)

→ Irish domhanda (mention)

→ Scottish Gaelic domhan (inherited)

→ Scottish Gaelic domhanta (mention)

→ Manx dowan (inherited)