The Collaborative International Dictionary of English v.0.48:

Ecstatic \Ec*stat"ic\, n.
   An enthusiast. [R.] --Gauden.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ecstatic \Ec*stat"ic\, a. [Gr. ?, fr. ?: cf. F. extatique. See
   Ecstasy, n.]
   1. Pertaining to, or caused by, ecstasy or excessive emotion;
      of the nature, or in a state, of ecstasy; as, ecstatic
      gaze; ecstatic trance.
      [1913 Webster]

            This ecstatic fit of love and jealousy. --Hammond.
      [1913 Webster]

   2. Delightful beyond measure; rapturous; ravishing; as,
      ecstatic bliss or joy.
      [1913 Webster]

WordNet (r) 3.0 (2006):

ecstatic
    adj 1: feeling great rapture or delight [syn: ecstatic,
           enraptured, rapturous, rapt, rhapsodic]