Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Indo-European *lewg-

→ English lock (root)
→ English lock (derived)
→ English reluctant (root)
→ English reluctance (root)
→ English luxury (root)
→ English leek (derived)
→ English ineluctable (root)
→ English luxe (root)
→ English loke (derived)
→ English louk (derived)
→ English reluctor (root)
→ English reluct (root)
→ English luctation (root)
→ Catalan lluitar (mention)
→ Welsh llechwedd (derived)
→ Spanish luchar (mention)
→ French lutter (derived)
→ French lucarne (derived)
→ Scottish Gaelic fuiling (derived)
→ Ancient Greek λοξός (derived)
→ Ancient Greek λύγος (root)
→ Ancient Greek λύγος (derived)
→ Ancient Greek λύγινος (root)
→ Manx lagg (derived)
→ Hindi रुग्ण (root)
→ Italian lottare (mention)
→ Latin luma (derived)
→ Latin luxus (root)
→ Latin luxus (mention)
→ Latin luxus (derived)
→ Latin luxus (derived)
→ Latin luctor (root)
→ Latin luctor (derived)
→ Latin lucta (root)
→ Latin luctator (root)
→ Latin reluctor (root)
→ Latin eluctor (root)
→ Latin luctatio (root)
→ Latin lucuns (derived)
→ Latin licinus (derived)
→ Latin eluctabilis (root)
→ Latin ineluctabilis (root)
→ Latin lygos (root)
→ Latin Lexovii (derived)
→ Old Norse Loki (derived)
→ Old Norse lykja (inherited)
→ Polish loch (derived)
→ Portuguese lutar (mention)
→ Romanian lupta (derived)
→ Sanskrit रोग (inherited)
→ Sanskrit रुग्ण (root)
→ Sanskrit रुग्ण (inherited)
→ Old Irish loing (root)