to wreck, to ruin, to mess up
Ça va tout bousiller !
This is going to ruin everything!
— Apocalypse Now (1979)
Vous allez vous bousiller les yeux.
You're going to ruin your eyes.
Tu vas te bousiller les yeux.
Euh, je crois que je viens de le bousiller.
Uh, I think I just messed it up.
— La Guerre des étoiles (1977)
Tu viens d'en remettre une en cloque et tu vas la bousiller !
You just got another one knocked up, and you're going to ruin her life!
— Faute d'amour (2017)
Tu vas me le bousiller.
You're going to ruin it for me.
— American Gangster (2007)