scoffer

from WordNet (r) 3.0 (2006)

scoffer
    n 1: someone who eats food rapidly and greedily [syn: {scoffer},
         {gorger}]
    2: someone who jeers or mocks or treats something with contempt
       or calls out in derision [syn: {scoffer}, {flouter},
       {mocker}, {jeerer}]

from The Collaborative International Dictionary of English v.0.48

Scoffer \Scoff"er\, n.
   One who scoffs. --2 Pet. iii. 3.
   [1913 Webster]