verb/pɛʁ.si.fle/
to mock someone by way of feigned politeness and kindness with ironic, veiled insults, or by apparently light-hearted teasing with a harsher double meaning, intended to be understood by onlookers but not the person mocked; to mock someone generally; to say in mockery
Formed from the intensive Latin prefix per- and the verb siffler (“to boo, to show disapproval”).