Source : Webster's Revised Unabridged Dictionary (1913)

   Syn: Violent; furious; exorbitant; excessive; atrocious;
        monstrous; wanton; nefarious; heinous. --
        {Out*ra"geous*ly} (out*r[=a]"j[u^]s*l[y^]), adv. --
        {Out*ra"geous*ness}, n.

Source : WordNet®

outrageousness
     n 1: excessive excess [syn: {exorbitance}]
     2: the quality of being outrageous [syn: {enormity}]