The word "heckler" is derived from the name given to Scottish textile workers who combed flax for processing. As they began to unionize in the early 19th century, the militant hecklers would intterupt the morning news reading by their co-workers. The word became associated with individuals who would shout out questions or insults to reveal truths that the person giving information would otherwise try to conceal or avoid.
Variant of heckle
transitive verbheckled, heckling
Origin of heckleorig. Scot to annoy or harass (a speaker) by interrupting with questions or taunts
Origin of heckleMiddle English hekelin ; from hechele: see hackle