blank check

Definitions

1. A signed check of the type used to draw money from a bank account, containing no information as to the amount to be paid with it, so that any amount can be filled in.
   US
2. A grant of complete authority to spend an unlimited amount of money, or to take other actions without restraint.
   US, figuratively

Equivalents

Examples

“Nixon and Kissinger had established a blank check policy, giving the Shah a free hand to buy⟳ as many American weapons systems as he wanted, even the most technologically advanced, so long as they were not nuclear.”

CEFR level