serve one right

serve one right idiom
Be deserved under the circumstances. For example, That punishment serves him right after what he's done to you. It is also put as serves you right, as in It wasn't accepted? Serves you right for applying so late. These idioms use serve in the sense of “treat in a specified manner,” in this case, justly. [Late 1500s]

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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