Where does “Rĩke” come from?

Rĩke (Greenlandic) comes from Greenlandic Riikki, from Estonian riik, from Low German riek, from Old Saxon rīki, from Proto-West Germanic rīkī, from Proto-Germanic rīkijaz, from Proto-Germanic rīks, from Proto-Celtic rīxs — to straighten, to right oneself; right; just.

Ancestry of “Rĩke”, step by step

StepLanguageWordMeaning
1GreenlandicRiikki
2Estonianriikstate, country, polity; government
3Low Germanriekrich
4Old Saxonrīkikingdom, empire
5Proto-West Germanicrīkīmighty, powerful; rich; kingdom, realm
6Proto-Germanicrīkijazkingly, royal, noble; mighty, powerful; rich
7Proto-Germanicrīksking, ruler
8Proto-Celticrīxsking
9Proto-Indo-Europeanh₃rḗǵsking, ruler
10Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just
Every word from Proto-Indo-European h₃reǵ-Every word from Proto-Indo-European h₃rḗǵsEvery word from Proto-Celtic rīxs