worry

To feel uneasy or concerned about something; be troubled. synonym: brood.

To seize something with the teeth and bite or tear repeatedly.

To touch or handle something nervously or persistently.

To attempt to deal with something in a persistent or dogged manner.

To cause to feel anxious, distressed, or troubled. synonym: trouble.

To seize with the teeth and bite or tug at repeatedly.

To touch or handle nervously or persistently.

To attack roughly and repeatedly; harass.