To do something to upset or anger someone; to be troublesome.
To molest; to harm; to injure.
To disturb or irritate, especially by continued or repeated acts; to bother with unpleasant deeds.
To annoy or irritate.
To stop.
To serve or behave as a spy or informer.
To complain.
To watch; to observe.
An unpleasant person, especially one who makes things difficult for others.
A police spy or informer.