carte blanche
noun
[ kɑːt ˈblɑːnʃ ]
• complete freedom to act as one wishes.
• "the architect given carte blanche to design the store"
• (in piquet) a hand containing no court cards as dealt.
Origin:
late 17th century: French, literally ‘blank paper’ (i.e. a blank sheet on which to write whatever one wishes, particularly one's own terms for an agreement).
