harassment
noun /ˈhærəsmənt/,  /həˈræsmənt/
  /həˈræsmənt/,  /ˈhærəsmənt/
[uncountable]- the act of annoying or worrying somebody by putting pressure on them or saying or doing unpleasant things to them- racial/sexual harassment
 
- the act of making repeated attacks on an enemy- guerrilla harassment of the enemy