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Proto-Indo-European *h₃rḗǵs

→ English Roy (derived)
→ English Vercingetorix (mention)
→ English rike (derived)
→ English rajah (mention)
→ Assamese ৰজা (derived)
→ Assamese ৰাইজ (inherited)
→ San Pedro Amuzgos Amuzgo rey (derived)
→ Bengali রাজা (derived)
→ Bishnupriya Manipuri রাজা (derived)
→ Breton roue (mention)
→ Catalan rei (inherited)
→ Cebuano rajah (mention)
→ Welsh rhi (inherited)
→ Danish rig (derived)
→ Middle English rike (derived)
→ Spanish rey (inherited)
→ Spanish rico (derived)
→ Faroese ríkur (derived)
→ Faroese ríki (derived)
→ Faroese ríki (derived)
→ French roi (inherited)
→ North Frisian rik (derived)
→ Irish rí (inherited)
→ Scottish Gaelic rìgh (inherited)
→ Galician real (derived)
→ Galician rei (inherited)
→ Middle High German riche (derived)
→ Westrobothnian ritkj (derived)
→ Old High German riche (derived(goh/gmh))
→ Old High German rihhi (derived)
→ Old High German rihhi (derived)
→ Gothic 𐍂𐌴𐌹𐌺𐍃 (derived)
→ Manx ree (inherited)
→ Hindi राजा (derived)
→ Indonesian raja (mention)
→ Ashokan Prakrit 𑀭𑀸𑀚𑀸 (inherited)
→ Early Assamese ৰাজা (derived)
→ Old Gujarati राइं (mention)
→ Icelandic ríkur (derived)
→ Icelandic ríki (derived)
→ Italian re (inherited)
→ Italian rege (derived)
→ Latin rex (inherited)
→ Ladino rey (inherited)