Welsh llwch

← Proto-Celtic *loku (inherited)

← Welsh dwst (link)

← Welsh pylor (link)

← Welsh codi llwch (link)

← Welsh tynnu llwch (link)

← Welsh llyn (link)

← Irish loch (cognate)

← Scottish Gaelic loch (cognate)

→ Welsh blwch llwch (mention)

→ Welsh llychlyd (affix)

→ Old Irish loch (cognate)