| Adj. | 1. | pesky - causing irritation or annoyance; "tapping an annoying rhythm on his glass with his fork"; "aircraft noise is particularly bothersome near the airport"; "found it galling to have to ask permission"; "an irritating delay"; "nettlesome paperwork"; "a pesky mosquito"; "swarms of pestering gnats"; "a plaguey newfangled safety catch"; "a teasing and persistent thought annoyed him"; "a vexatious child"; "it is vexing to have to admit you are wrong"annoying, bothersome, galling, irritating, nettlesome, pestering, plaguy, vexatious, vexing, plaguey, teasing, pestiferous disagreeable - not to your liking; "a most disagreeable journey"; "a disagreeable old man"; "in a disagreeable mood" | |