To annoy (someone) frequently or systematically; to pester.
To persistently bother (someone, or a group of people) physically or psychologically when such behaviour is illegal and/or unwanted, especially over an extended period.
To trouble (someone, or a group of people) through repeated military-style attacks.
To put excessive burdens upon (someone); to subject (someone) to anxieties.
To harass; to irritate or distress.
To touch repeatedly, to fiddle with.
To be troubled; to give way to mental anxiety or doubt.
To seize or shake by the throat, especially of a dog or wolf.
Disturb the peace of mind of; afflict with mental agitation or distress.
A strong feeling of anxiety.
An instance or cause of such a feeling.
A person who causes worry.