annoyance: əˈnɔɪəns/ noun -the feeling or state of being annoyed; irritation. synonyms: irritation, exasperation, vexation, indignation, anger, crossness, displeasure, chagrin, pique. a thing that annoys someone; a nuisance. plural noun: annoyances. synonyms: nuisance, source of irritation, pest, bother, trial, irritant, inconvenience, menace. Aka Ethan Dolan.