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on one's mind
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Idioms and Phrases
Also, on the brain . In one's thoughts, preoccupying one. For example, The book prize has been on my mind, but I haven't been able to discuss it with you . It is often put as have something on one's mind (or the brain) meaning “be preoccupied with something,” as in I didn't mean to be rude; I just have a lot on my mind right now , or John has nothing but girls on the brain . [Mid-1800s]Advertisement
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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