rubber-stamp

(noun) a stamp (usually made of rubber) for imprinting a mark or design by hand. Synonyms: handstamp, rubber stamp.

(noun) routine authorization of an action without questions. Synonyms: rubber stamp.

(verb) stamp with a rubber stamp, usually an indication of official approval on a document. Synonyms: rubberstamp, handstamp.

(verb) approve automatically. Synonyms: rubberstamp.