grease the wheels

grease the wheels idiom
Also, oil the wheels. Make things run smoothly, as in You can count on Ben to grease the wheels so we'll be waited on promptly. This metaphoric expression transfers literal lubrication to figurative. [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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