Source : Webster's Revised Unabridged Dictionary (1913)

Idealistic \I*de`al*is"tic\, a.
   Of or pertaining to idealists or their theories.

Source : WordNet®

idealistic
     adj 1: of or relating to the philosophical doctrine of the reality
            of ideas [syn: {ideal}]
     2: of high moral or intellectual value; elevated in nature or
        style; "an exalted ideal"; "argue in terms of high-flown
        ideals"- Oliver Franks; "a noble and lofty concept" [syn:
        {exalted}, {high-flown}, {high-minded}, {lofty}, {rarefied},
         {rarified}, {noble-minded}]