[n] tormenting by continued persistent attacks and criticism [n] a feeling of intense annoyance caused by being tormented; "so great was his harassment that he wanted to destroy his tormentors"
molestation, torment
aggravation, annoyance, annoyingness, bad news, bedevilment, bore, bother, botheration, bothering, bothersomeness, crashing bore, devilment, difficulty, disturbance, dogging, downer, drag, exasperation, fretting, harrying, headache, hounding, irking, irks