Source : Webster's Revised Unabridged Dictionary (1913)

Splendiferous \Splen*dif"er*ous\, a.
   Splendor-bearing; splendid. --Bale (1538). ``A splendiferous
   woman.'' --Haliburton. [Now used humorously.]

Source : WordNet®

splendiferous
     adj : having great beauty and splendor; "a glorious spring
           morning"; "a glorious sunset"; "splendid costumes"; "a
           kind of splendiferous native simplicity" [syn: {glorious},
            {resplendent}, {splendid}]