Synonyms for Jeering (same or very similar meaning)
WordNet sense 1 (showing your contempt by derision):
jeer, mockery, scoff, scoffingWordNet sense 2 (abusing vocally; expressing contempt or ridicule):
derisive, gibelike, mocking, tauntingWordNet sense 3 (exhibiting lack of respect; rude and discourteous):
disrespectfulFrom the ODE community, based on WordNetadd/edit