The Collaborative International Dictionary of English v.0.48:

Paradisaic \Par`a*di*sa"ic\, Paradisaical \Par`a*di*sa"ic*al\,
   a.
   Of or pertaining to, or resembling, paradise; paradisiacal;
   as, paradisaical innocence; an age of paradisaical happiness.
   "Paradisaical pleasures." --Gray.

   Syn: paradisiacal, paradisiac, paradisaic, paradisal,
        elysian, paradisial.
        [1913 Webster + WordNet 1.5]

   2. Causing happinesss.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

paradisaical
    adj 1: relating to or befitting Paradise; "together in that
           paradisal place"; "paradisiacal innocence" [syn:
           paradisiacal, paradisiac, paradisaical,
           paradisaic, paradisal]