Source : Webster's Revised Unabridged Dictionary (1913)

Outbrave \Out*brave"\, v. t.
   1. To excel in bravery o? in insolence; to defy with superior
      courage or audacity

   2. To excel in magnificence or comeliness.

            The basest weed outbraves his dignity. --Shak.

Source : WordNet®

outbrave
     v 1: resist bravely; "He outbraved the enemy"
     2: be braver than