if someone is worried or bored to death, they are very worried or bored.

Why didn't you ring and say you were going to be late? I was worried to death.

You must be bored to death, sitting here all day with nothing to do.

• hit like a ton of bricks
• hit list
• hit man
• hit on
• hit on someone
• hit on something
• hit or miss
• hit pay dirt
• hit right between the eyes
• hit rock bottom
• hit someone between the eyes
• hit someone like a ton of bricks
• hit someone right between the eyes
• hit someone up
• hit someone where it hurts
• hit someone where it hurts most
• hit something hard
• hits the fan
• hit stride
• hit the books
• hit the bottle
• hit the brakes
• hit the brick wall
• hit the buffers
• hit the ceiling