Source : Webster's Revised Unabridged Dictionary (1913)

Insatiable \In*sa"tia*ble\, a. [F. insatiable, L. ionsatiabilis.
   See {In-} not, and {Satiable}.]
   Not satiable; incapable of being satisfied or appeased; very
   greedy; as, an insatiable appetite, thirst, or desire.

         ``Insatiable of glory.''                 --Milton.

Source : WordNet®

insatiable
     adj : impossible to satiate or satisfy; "an insatiable appetite";
           "an insatiable hunger for knowledge" [syn: {insatiate},
            {unsatiable}] [ant: {satiate}]