slip (one's) mind
To be forgotten, especially of an obligation. I'm sorry I didn't call you back sooner, it totally slipped my mind.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.
slip one's mind
[for something that was to be remembered] to be forgotten. I meant to go to the grocery store on the way home, but it slipped my mind. My birthday slipped my mind. I guess I wanted to forget it.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
slip one's mind
Be overlooked or forgotten, as in I meant to pick up the wine but it slipped my mind. This idiom was first recorded about 1340.
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.
slip your mind
If something slips your mind, you forget it. I was supposed to call her this morning and it slipped my mind. The reason for my visit had obviously slipped his mind.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
slip somebody’s ˈmemory/ˈmind
forget about something or forget to do something: I was supposed to go to the dentist today, but it completely slipped my mind.Farlex Partner Idioms Dictionary © Farlex 2017