heavy lifting
noun Informal.
hard work: A team of researchers did the heavy lifting for the author.
Words nearby heavy lifting
Example sentences from the Web for heavy lifting
It is long past time for the drab Republican stalwarts to turn to a low-key but heavy-lifting leader.
The professionals can afford to leave people in less precarious situations to them and focus on the heavy-lifting jobs.
It is not, however, the kind of strength involved in heavy-lifting.