put your foot down
成語所屬單字foot
put your foot down — 慣用語
1. To be firm and insist that something must or must not happen.
1.慣用語
釋義
堅決反對
To be firm and insist that something must or must not happen.
例句
The teacher put her foot down and banned phones in class.
He put his foot down and refused to let his son stay out late.