suit oneself

suit oneself idiom
Do as one pleases, as in We had expected you, but if you don't want to come, suit yourself. This idiom, which uses suit in the sense of “be agreeable or convenient,” is often put as an imperative. [Late 1800s]

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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