regnancy

noun

1. (countable, uncountable)The condition or quality of being regnant; sovereignty; rule.

   “c. 1810-1834? Samuel Taylor Coleridge, Notes on Henry More The third and last cause, and especially operative in the writings of this author, is the presence and regnancy of a false and fantastic philosophy, yet shot through with refracted light from the not risen but rising truth […]”