worry

A strong feeling of anxiety.

"I'm afflicted by worry throughout the night."

An instance or cause of such a feeling.

"My main worry is that I'll miss the train."

To be troubled; to give way to mental anxiety or doubt.

"Stop worrying about your test, it’ll be fine."

Disturb the peace of mind of; afflict with mental agitation or distress.

"Your tone of voice worries me."

To harass; to irritate or distress.

"The President was worried into military action by persistent advisors."