back down
US /bæk daʊn/
UK /bæk daʊn/

1.
reculer, céder
withdraw a claim, demand, or commitment, or abandon one's position in an argument
:
•
He refused to back down on his decision.
Il a refusé de reculer sur sa décision.
•
Despite the pressure, she wouldn't back down from her principles.
Malgré la pression, elle ne voulait pas céder sur ses principes.