It slipped my mind

30th September 2024

It slipped my mind

We use this expression to say that we forgot something.
Usage
Written: 
Yes
Spoken: 
Yes
Formal: 
No
Informal: 
Yes
Example 1
Did you know it's Jonathan's birthday today?
It totally slipped my mind! I haven't got him a present or anything.
Example 2
Have you got the book I asked you for?
I'm sorry, it totally slipped my mind. Can I give it to you tomorrow?