puff piece

puff piece idiom
An approving or flattering article, as in That was really a puff piece about the conductor, written by her cousin. The use of puff for “exaggerated praise” dates from about 1600; piece was added in the mid-1900s.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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