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To cover something up with paint so as to hide or obscure it. A noun or pronoun can be used between "paint" and "out." Staff were quick to paint out the obscene graffiti on the side of the gymnasium. Someone came by and painted certain words out that were featured on the mural on Main Street.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
paint something out
to cover something up or obliterate something by applying a layer of paint. The worker painted the graffiti out. They had to paint out the graffiti.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.