"Do my best" vs. "my level best" [closed]
Solution 1:
Curiously, the statements
I will do my best.
and
I will do my level best.
are, on the face of it, assurances that the speaker intends to try hard and really hard, respectively. But they also can be used to cast doubt on the assertion. If someone gives you a task you feel is impossible to perform, responding with "I will do my best" actually can mean you believe you will fail even though you are going to try as hard as you are able. Adding "level" or any other intensifier can be used to enhance the mood of doubt.
Ain't English grand?