back at it (again)

back at it (again)

To resume doing something, often something negative or unpleasant. A: "Do you hear arguing?" B: "Ugh, those two must be back at it again." I tried to stop biting my nails, but I'm back at it already.
See also: back

back at it (again)

doing something again. (Usually said in criticism.) I thought you stopped smoking, but I see you are back at it again.
See also: back