Source : Webster's Revised Unabridged Dictionary (1913)

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.

         Jesus knew that they were desirous to ask him. --John
                                                  xvi. 19.

         Be not desirous of his dainties.         --Prov. xxiii.
                                                  3.

Source : WordNet®

desirous
     adj : having or expressing desire for something; "desirous of high
           office"; "desirous of finding a quick solution to the
           problem" [ant: {undesirous}]