Source : Webster's Revised Unabridged Dictionary (1913)

Disensanity \Dis`en*san"i*ty\, n. [Pref. dis- + en (L. in) +
   sanity.]
   Insanity; folly. [Obs.]

         What tediosity and disensanity Is here among! --Beau. &
                                                  Fl.