The Collaborative International Dictionary of English v.0.48:

Outr'e \Ou`tr['e]"\, a. [F., p.p. of outer to exaggerate, fr. L.
   ultra beyond. See Outrage.]
   Out of the common course or limits; extravagant[2]; bizarre;
   outlandish[2]; as, an outr['e] costume.
   [Webster 1913 Suppl. + PJC]

         My first mental development had in it much of the
         uncommon -- even much of the outr['e].   --E. A. Poe.
   [Webster 1913 Suppl.]