blank check

The phrase "blank check" refers to a situation where someone is given complete and unrestricted power or authority to act as they see fit, without any limitations or constraints. It suggests that a person or entity is given a figurative check with no specified amount, allowing them to use or spend resources however they choose, often without any accountability or oversight. It implies giving someone free rein and trusting them implicitly to make decisions or take actions without providing specific guidelines or restrictions.