What is another word for gives stamp of approval?
Pronunciation: [ɡˈɪvz stˈamp ɒv ɐpɹˈuːvə͡l] (IPA) 
When it comes to approving something, there are a variety of ways to convey your satisfaction. To give your validation or endorsement, you can use any of the following synonyms for the phrase "gives stamp of approval": gives the thumbs up, gives the green light, endorses, recommends, supports, gives the nod, commends, ratifies, sanctions, validates, accredits, blesses, confirms, approves, authorizes, certifies, licenses, validates and warrants. Each of these phrases conveys a similar sentiment of agreeing to or approving of a specific action or product, and can be used interchangeably depending on the context.
