to ruin, to wreck
Tu croyais que j'allais te laisser ruiner mon business ?
Did you think I was going to let you ruin my business?
— The Man From Nowhere (2010)
Si tu veux ruiner quelqu’un, dis tout ce qu’il veut entendre.
If you want to ruin someone, say whatever they want to hear.
Une chose pareille pourrait ruiner ta carrière.
Something like that could ruin your career.