Welsh go-

← Proto-Celtic *uɸo- (inherited)

← Scottish Gaelic fo (cognate)

← Proto-Indo-European *upo (inherited)

← Cornish go- (cognate)

← Old Irish fo (cognate)

→ Welsh gorllewin (compound)

→ Welsh gosod (mention)

→ Welsh gobennydd (affix)

→ Welsh gostwng (prefix)

→ Welsh goddrych (affix)

→ Welsh gofal (affix)

→ Welsh gwahodd (mention)

→ Welsh gofod (prefix)

→ Welsh gohirio (prefix)

→ Welsh gofid (affix)

→ Welsh gogwyddo (affix)

→ Welsh goleddf (affix)