on one's mind

The idiom "on one's mind" is often used to describe something that occupies a person's thoughts or causes concern.

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Definition

B2General

(informal, idiomatic)Occupying someone's thoughts persistently.

Example

I can't stop thinking about the project; it's been on my mind all week.
She has been on his mind ever since their last conversation.

B2General

(informal, idiomatic)Causing someone to feel worried or preoccupied.

Example

What's on your mind? You seem really distracted today.
The upcoming exam is on my mind, and I can't seem to relax.

Similar

Terms that have similar or relatively close meanings to "on one's mind":

in one's head back of one's mind in one's sights on one's plate on one's head have one's eye on think about get into someone's head off one's head on someone's hands in one's book think of bear on have a mind of one's own in petto