bad blood
US /bæd blʌd/
UK /bæd blʌd/

1.
mauvaise entente, rancune, animosité
feelings of hate or anger between people because of arguments in the past
:
•
There's been bad blood between the two families for generations.
Il y a eu de la mauvaise entente entre les deux familles pendant des générations.
•
After their big argument, there was a lot of bad blood between them.
Après leur grosse dispute, il y avait beaucoup de mauvaise entente entre eux.