lay down the law

US /leɪ daʊn ðə lɔː/
UK /leɪ daʊn ðə lɔː/
"lay down the law" picture
1.

dicter sa loi, imposer des règles

to tell people what they must do, without caring about their opinions

:
The new manager immediately laid down the law about punctuality.
Le nouveau gérant a immédiatement dicté sa loi concernant la ponctualité.
My parents always lay down the law when it comes to my curfew.
Mes parents dictent toujours leur loi en ce qui concerne mon couvre-feu.