put your foot down

US /pʊt jʊər fʊt daʊn/
UK /pʊt jʊər fʊt daʊn/
"put your foot down" picture
1.

to use your authority to stop something happening

:
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My parents finally had to put their foot down and tell me I couldn't go to the party.
•
The teacher had to put her foot down about the excessive talking in class.
:
put your foot in your mouthput downput your best foot forwardfootfootingput your finger onput your oar in