rubber stamp
noun
Definitions
A piece of rubber or similar material with a design or text carved or molded for the purpose of transferring ink or dye to imprint that design on another object.
Example: The library had a rubber stamp to imprint the due date.
A person or organisation that approves, routinely or as a formality, matters decided by some other person or organisation.
verb
Definitions
To process, approve or decide matters routinely rather than through careful consideration.
Example: They usually just rubber stamp orders under $100.
adjective
Definitions
Of a person, organisation, or process, making decisions or approving matters routinely or without real power.
Example: rubber stamp committee