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Proto-Indo-European *lókus

→ English lay (derived)
→ English loch (derived)
→ English cunette (derived)
→ English lough (derived)
→ Aragonese laco (inherited)
→ Old English lagu (derived)
→ Asturian llagu (inherited)
→ Catalan llac (inherited)
→ Old Church Slavonic локꙑ (inherited)
→ Dalmatian lac (inherited)
→ Emilian lèg (inherited)
→ Spanish lago (inherited)
→ French lac (inherited)
→ Old French lac (derived)
→ Franco-Provençal lac (inherited)
→ Friulian lâc (inherited)
→ Irish loch (inherited)
→ Scottish Gaelic loch (inherited)
→ Galician lago (inherited)
→ Westrobothnian lag (inherited)
→ Ancient Greek λάκκος (inherited)
→ Icelandic lögur (derived)
→ Italian lago (inherited)
→ Latin lacus (inherited)
→ Norwegian Bokmål låg (inherited)
→ Norwegian Nynorsk log (inherited)
→ Old Norse lǫgr (inherited)
→ Norman lac (inherited)
→ Portuguese lago (inherited)
→ Portuguese lagoa (inherited)
→ Romansch lag (inherited)
→ Romansch lai (inherited)
→ Romansch lej (inherited)
→ Romansch laitg (inherited)
→ Romanian lac (derived)
→ Aromanian lac (inherited)
→ Sicilian lacu (inherited)
→ Old Irish loch (inherited)
→ Albanian liqen (inherited)
→ Swedish lag (derived)
→ Walloon lak (inherited)