pesky
     adj : 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" syn: annoying, bothersome,
            galling, irritating, nettlesome, pestering, pestiferous,
            plaguy, plaguey, teasing, vexatious, vexing
     also: peskiest, peskier
see also:
annoying bothersome galling irritating nettlesome pestering 
pestiferous plaguy plaguey teasing vexatious 
vexing peskiest peskier 

peskier
     see pesky
see also:
pesky