Source : Webster's Revised Unabridged Dictionary (1913)

Delirious \De*lir"i*ous\, a. [From {Delirium}.]
   Having a delirium; wandering in mind; light-headed; insane;
   raving; wild; as, a delirious patient; delirious fancies. --
   {De*lir"i*ous*ly}, adv. -- {De*lir"i*ous*ness}, n.

Source : WordNet®

deliriously
     adv 1: as if in a delirium; "he was talking deliriously"
     2: in a delirious manner; "her answer made him deliriously
        happy"