The Collaborative International Dictionary of English v.0.48:

Difficile \Dif"fi*cile\, a. [L. difficilis: cf. F. difficile.
   See Difficult.]
   Difficult; hard to manage; stubborn. [Obs.] --
   Dif"fi*cile*ness, n. [Obs.] --Bacon.
   [1913 Webster]