hack (as a noun)

4. N-COUNT

If you refer to a professional writer, such as a journalist, as a hack, you disapprove of them because they write for money without worrying very much about the quality of their writing.

• tabloid hacks, always eager to find victims in order to sell newspapers.
  

5. N-COUNT : oft supp N

If you refer to a politician as a hack, you disapprove of them because they are too loyal to their party and perhaps do not deserve the position they have.

• Far too many party hacks from the old days still hold influential jobs.