/ˈhedspeɪs/
head·space
BrE /ˈhedspeɪs/
NAmE /ˈhedspeɪs/
[U]
the amount of air or empty space that is left above the contents of a container before it is sealed
(informal)
the way you think or feel about sth
Whenever you read a book, you’re entering the writer’s headspace.
(informal)
time to think clearly without any pressure
I could do with a bit of headspace just to think about what I’m doing.