on one's mind

on (one's) mind

In one's thoughts. Jennie's been on my mind lately—do you know how she is? You look worried—what's on your mind?

See also: mind, on

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.

on one's mind

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]

See also: mind, on

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.