knuckle under

US /ˈnʌk.l̩ ˌʌn.dər/
UK /ˈnʌk.l̩ ˌʌn.dər/
"knuckle under" picture
1.

céder, s'incliner, capituler

to yield or submit to pressure or authority

:
After weeks of resistance, he finally had to knuckle under to their demands.
Après des semaines de résistance, il a finalement dû céder à leurs exigences.
The company refused to knuckle under to the union's threats.
L'entreprise a refusé de céder aux menaces du syndicat.