advise against (something)
To recommend not pursuing a particular plan or action. I would advise against quitting your job if you are not actively pursuing another opportunity. My mechanic advised against driving the car until the transmission was repaired.
advise against something
to suggest that something not be done. Lisa always advises against hasty actions.
advise someone against doing something
to encourage or counsel someone not to do something. I advised Bill against quitting his job.