The Collaborative International Dictionary of English v.0.48:

Enthusiastic \En*thu`si*as"tic\, Enthusiastical
\En*thu`si*as"tic*al\, a. [Gr. ? .]
   Filled with enthusiasm; characterized by enthusiasm; zealous;
   as, an enthusiastic lover of art. "Enthusiastical raptures."
   --Calamy. -- En*thu`si*as"tic*al*ly, adv.
   [1913 Webster]

         A young man . . . of a visionary and enthusiastic
         character.                               --W. Irving.
   [1913 Webster]