Source : Webster's Revised Unabridged Dictionary (1913)

Exorbitance \Ex*or"bi*tance\, Exorbitancy \Ex*or"bi*tan*cy\,, n.
   A going out of or beyond the usual or due limit; hence,
   enormity; extravagance; gross deviation from rule, right, or
   propriety; as, the exorbitances of the tongue or of
   deportment; exorbitance of demands. ``a curb to your
   exorbitancies.'' --Dryden.

         The lamentable exorbitances of their superstitions.
                                                  --Bp. Hall.

Source : WordNet®

exorbitance
     n : excessive excess [syn: {outrageousness}]