laughs, smiles, snickers, sniggers

sniffs, snortscatcalls, derides, gibes(or jibes), hoots, insults, jeers, mocks, ridiculesdecries, despises, disdainsscoffs (at), scornsbad-mouths, belittles, disparages, pooh-poohs(also poohs), puts downheckles, jives, razzes, ribs, rides, taunts, teases, torments