Welsh mynydd

← Breton menez (cognate)

← Proto-Brythonic *mönɨð (inherited)

← Proto-Celtic *moniyos (inherited)

← Proto-Indo-European *men- (derived)

← Cornish menydh (cognate)

← Latin mōns (cognate)

← Middle Welsh mynyð (inherited)

→ English mountain (cognate)

→ Breton menez (cognate)

→ Welsh mynyddig (suffix)

→ Welsh mynydda (affix)

→ Welsh i fyny (mention)

→ Scottish Gaelic monadh (cognate)

→ Latin mons (cognate)

→ Old Irish Mana (cognate)

→ Albanian mat (cognate)