Source : Webster's Revised Unabridged Dictionary (1913)

Overmuch \O"ver*much"\, a.
   Too much. -- adv. In too great a degree; too much. -- n. An
   excess; a surplus.

Source : WordNet®

overmuch
     adj : very great in quantity; overabundant; "showed overmuch
           affection"
     n : a quantity that is more than what is appropriate;
         "four-year-olds have an overabundance of energy"; "we
         received an inundation of email" [syn: {overabundance}, {overmuchness},
          {superabundance}]

overmuch
     adv : more than necessary; "she eats too much"; "let's not blame
           them overmuch" [syn: {too much}]