Regnancy
Pronunciation : Reg"nan*cy (-nan*s)
Part of Speech : n.
Definition : Defn: The condition or quality of being regnant; sovereignty; rule. Coleridge.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder