slightly formal to let someone do whatever they want in a particular situation.
She gave her interior decorator carte blanche to do up her apartment.
(usually + to do something)
(redirected from give carte blanche)
give (one) carte blanche
To give one the freedom to do whatever one wants or deems necessary, especially with a particular task or assignment. This French phrase means "blank card" in English. I can't believe the boss gave me carte blanche to organize the conference—he's usually such a micromanager!