put (one's) foot down on (something)(redirected from he is putting his foot down on)
put (one's) foot down on (something)
To indicate that one is unyielding or inflexible in one's position on or decision about something. Your father has already put his foot down on the issue, so you need to stop asking him to change his mind. You're the manager, Sarah. You need to put your foot down on this now, or your staff will walk all over you.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.