rubber stamp
noun [ C ]
ukus WORKPLACE
a small desk tool with raised letters made of rubber, that is used for printing the date, name of an organization, etc. on documents:
His secretary signs the stack of papers using a rubber stamp with his signature on it.
disapproving
a person or organization that gives approval to an idea, project, etc. without examining it carefully first:
act as/become a rubber stamp for sth
The board is not simply a rubber stamp for management's decisions.
disapproving
approval that is given to an idea, project, etc., especially before it is examined carefully:
Many felt that the committee members were merely providing a rubber stamp for government decisions.
If anyone thinks they can get a rubber stamp, they won't.