Answer: pesty

AnswerCrossword Clue
PESTYAnnoying, like a kid brother
PESTYLike gnats and rats
PESTYBothersome
PESTYLike mosquitoes
PESTYAnnoying
PESTYLike a nuisance
PESTYIrritating
PESTYTroublesome
pestyannoying