sniff, snort

catcall, deride, gibe (or jibe), hoot, insult, jeer, mock, ridicule

decry, despise, disdain

scoff (at), scorn

bad-mouth, belittle, disparage, pooh-pooh (also pooh), put down

heckle, jive, razz, rib, ride, taunt, tease, torment