Middle English fleryen, of Scandinavian origin; akin to Norwegian flire to giggle
verb
to laugh or grimace in a coarse derisive manner : sneer
scoffjeergibefleersneerflout mean to show one's contempt in derision or mockery. scoff stresses insolence, disrespect, or incredulity as motivating the derision. jeer suggests a coarser more undiscriminating derision.