scoff

scoff (http://definr.com/scoff)

     n : showing your contempt by derision [syn: jeer, jeering, mockery,
          scoffing]
     v 1:  laugh or scoff at; "The crowd jeered at the speaker" [syn:
          jeer, flout, barrack, gibe]
     2: treat with contemptuous disregard; "flout the rules" [syn: flout]