lip service

lip service idiom
Verbal but insincere expression of agreement or support. It is often put as pay or give lip service, as in They paid lip service to holding an election next year, but they had no intention of doing so. [Mid-1600s]

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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