Harassment (noun)

1. The act of subjecting someone to aggressive pressure or intimidation.
2. The act of subjecting someone repeatedly to unwanted or annoying actions.
3. The act of creating an unpleasant or hostile situation for someone through uninvited and aggressive actions.
4. The act of annoying or tormenting someone persistently.
5. The act of wearing someone out by constant attack.

Origin:

French harceler, from harer to set a dog on, from hare, noun.

Examples:

1. The employee filed a complaint of sexual harassment.
2. The harassment of the competitors forced them out of the market.
3. The harassment of the employees led to a high turnover rate.
4. The town was under constant harassment from the enemy.
5. The harassment led to severe distress for the victims.