Translation for "had better" to french

Had better

• il vaut mieux
• avait mieux

Translation examples

avait mieux

I would have thought the police had better things to do with their time. I'm investigating a series of murders.
Je croyais que la police avait mieux à faire.

Besides, if Manheim had better aim, you'd be dead.
De plus, si Manheim avait mieux visé, tu serais mort.

- We had better things to do.
On avait mieux à faire.