When someone is given carte blanche, they are given complete and unrestricted freedom or authority to do whatever they please. Antonyms for give carte blanche include restrict, limit, confine, restrict, withhold, restrain, and deny. These words suggest a sense of control, containment, or withholding something from the person, and can be used to describe situations where someone's actions are subject to limitations or restrictions. Giving carte blanche is an expression of trust, and antonyms for this phrase suggest a lack of trust, or at the very least, a sense of caution or responsibility towards the actions of others.