Meaning of “rubber stamp” in the English Dictionary

"rubber stamp" in American English

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rubber stampnoun [ C ]

us /ˈrʌb·ər ˈstæmp/

a device used for printing with raised letters, numbers, or pictures made of an elastic substance such as rubber that you cover with ink and press against a surface, or the printed letters, etc., made in this way:

The guard marked my pass with a rubber stamp.

disapproving A rubber stamp is also an approval given without much thought:

The mayor has a lot of power, and city counselors provide a rubber stamp.

rubber-stampverb [ T ]

us /ˈrʌb·ərˈstæmp/ disapproving

to approve something without giving it much thought:

Congress is not going to simply rubber-stamp any policy the president proposes.

(Definition of “rubber stamp” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"rubber-stamp" in Business English

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rubber-stampverb [ T ]

uk /ˌrʌbəˈstæmp/ us

to approve an idea, project, law, etc. without examining it carefully first:

The board is expected to rubber-stamp the approval next month.

rubber-stampadjective [ before noun ]

uk us

used to describe a group or organization that gives approval to ideas, projects, laws, etc. without examining them carefully first:

The problem we face in this country is rubber-stamp boards.
a rubber-stamp legislature/parliament

used to describe a decision that is made based on someone else's advice, without examining the facts or arguments on both sides first:

a rubber-stamp decision/recommendation/approach

rubber stampnoun [ C ]

uk us

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.

(Definition of “rubber-stamp” from the Cambridge Business English Dictionary © Cambridge University Press)