There are plenty of synonyms for the term "annoying person." These words can be used to describe someone who is frustrating or irritating in their behavior. Some common synonyms include "pest," "nuisance," "irritant," "bother," "thorn in one's side," "pain in the neck," "disruptive force," "a real pistol," "a fly in the ointment," and "a burr under one's saddle." Whether it's someone who won't stop talking, interrupts frequently, or simply has an unpleasant personality, there are many ways to describe an annoying person. Using these synonyms can help convey your frustration and annoyance towards someone who is bothering you.