From Longman Dictionary of Contemporary Englishheckleheck‧le /ˈhekəl/ verb [intransitive, transitive] INTERRUPTto interrupt and try to embarrass someone who is speaking or performing in public —heckler noun [countable] —heckling noun [uncountable]→ See Verb table
Examples from the Corpus
heckle• Comedians usually have a few ready comments for members of the audience that come to heckle.• The speaker was heckled by a group of protestors.• For a while it was enough to heckle the love scenes and cackle at disasters.• Perhaps the adventurers will stay and heckle the puppets, or join in the performance.Origin heckle (1300-1400) hackle; → HACKLES 