- pest, blighter, cuss, pesterer, gadfly - a persistently annoying person
--1 is a kind of tormentor, tormenter, persecutor
--1 has particulars: nudnik, nudnick - gadfly - any of various large flies that annoy livestock
--2 is a kind of fly
--2 has particulars:botfly; warble fly; horsefly, cleg, clegg, horse fly