n. 25B6; noun NUISANCE, annoyance, irritation, irritant, thorn in one's flesh/side, vexation, trial, the bane of one's life, menace, trouble, problem, worry, bother; informal pain (in the neck), aggravation, headache; Scottish informal skelf; N. Amer. informal nudnik; Austral./NZ informal nark.
PEST
Meaning of PEST in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012