I. verb
Synonyms: worry 1, annoy, bedevil, beleaguer, hagride, harass, harry, plague, tantalize, tease
Related Word: ride
Idioms: drive (one) crazy, drive (one) up the wall, pester to death
II. noun
Synonyms: annoyance 3, besetment, bother, botheration, botherment, exasperation, irritant, nuisance, pest, plague