The Collaborative International Dictionary of English v.0.48:

Desirous \De*sir"ous\, a. [F. d['e]sireux, OF. desiros, fr.
   desir. See Desire, n.]
   Feeling desire; eagerly wishing; solicitous; eager to obtain;
   covetous.
   [1913 Webster]

         Jesus knew that they were desirous to ask him. --John
                                                  xvi. 19.
   [1913 Webster]

         Be not desirous of his dainties.         --Prov. xxiii.
                                                  3.
   [1913 Webster]

WordNet (r) 3.0 (2006):

desirous
    adj 1: having or expressing desire for something; "desirous of
           high office"; "desirous of finding a quick solution to
           the problem" [syn: desirous, wishful] [ant:
           undesiring, undesirous]

Moby Thesaurus II by Grady Ward, 1.0:

61 Moby Thesaurus words for "desirous":
   acquisitive, agog, alacritous, all agog, amative, amatory, amorous,
   animated, anxious, appetitive, ardent, avid, breathless,
   bursting to, desiderative, desireful, desiring, eager, erotic,
   forward, full of life, grabby, grasping, greedy, hopeful, hoping,
   hormic, impassioned, impatient, itchy, keen, lascivious, libidinal,
   libidinous, lickerish, lively, longing, loverlike, loverly,
   lustful, needing, optative, panting, passionate, prehensile,
   prompt, quick, raring to, ready, ready and willing, sexual,
   spirited, tempted, vital, vivacious, vivid, wanting, wishful,
   wishing, yearning, zestful