read someone's mind
read (one's) mind
To know what one is thinking. You read my mind—that's exactly where I want to go to dinner! I'm sorry, but I can't read your mind. You need to tell me these things.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
read someone's mind
Discern what someone is thinking or feeling, as in He often finished her sentences for her, almost as though he could read her mind. [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.