adj. 25B6; adjective ANNOYING, irritating, infuriating, exasperating, maddening, trying, tiresome, troublesome, bothersome, irksome, vexing, galling; informal aggravating, pesky.
VEXATIOUS
Meaning of VEXATIOUS in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012