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.
To an extreme or intolerable degree, as in I am tired to death of these fund-raising phone calls, or That movie just thrilled me to death. This hyperbolic phrase is used as an intensifier. Also see sick and tired; tired out. [c. 1300]