rikāz (Livonian) comes from Proto-Finnic rik'as, from Proto-Germanic rīkijaz, from Proto-Germanic rīks, from Proto-Celtic rīxs, from Proto-Indo-European h₃rḗǵs, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.
rikāz (Livonian): rich, wealthy