Dyarchy is a 7 letter English word. It's valid Scrabble word worth 19 points. It's valid Words with friends word worth 17 points.
You can make 92 anagrams from letters in dyarchy (acdhryy).
First recorded in 1825-35; di-1 + -archy
The designation suited the early years of the Empire, in which a dyarchy of princeps and senate had been maintained.
As one Provincial Governor remarked to me, "We are in reality skipping the dyarchy stage."