To put excessive burdens upon (someone); to subject (someone) to anxieties.
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 annoy (someone) frequently or systematically; to pester.
To trouble (someone, or a group of people) through repeated military-style attacks.
To intentionally inflict severe pain or suffering on (someone).
The intentional causing of somebody's experiencing agony.
The "suffering of the heart" imposed by one on another, as in personal relationships.
(often as "absolute torture") Stage fright; severe embarrassment.