Source : Webster's Revised Unabridged Dictionary (1913)

      His insolence is more intolerable Than all the princes in
      the land beside.                            --Shak.

   4. Enormous.

            This intolerable deal of sack.        --Shak.
      -- {In*tol"er*a*ble*ness}, n. -- {In*tol"er*a*bly}, adv.

Source : WordNet®

intolerably
     adv : to an unacceptable degree; "The percentage of lead in our
           drinking water is unacceptably high" [syn: {unacceptably}]
           [ant: {acceptably}, {acceptably}]