(n.) The act of harassing, or state of being harassed; worry; annoyance; anxiety.

McCarthyism 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 irksomeness irritation molestation nuisance oppression persecution perturbation peskiness pest pestiferousness plaguesomeness problem provocation provoking provokingness red-baiting tiresomeness torment tormenting trial trouble troublesomeness vexation vexatiousness vexing victimization wearisomeness witch-hunt witch-hunting worriedness worries and cares worriment worrisomeness worry worrying