Source : Webster's Revised Unabridged Dictionary (1913)

Rampageous \Ram*pa"geous\, a.
   Characterized by violence and passion; unruly; rampant.
   [Prov. or Low]

         In the primitive ages of a rampageous antiquity.
                                                  --Galt.

Source : WordNet®

rampageous
     adj : displaying raging violence; often destructive; "the hot
           rampageous horses of my will"- W.H.Auden