book off
Upper Intermediate (B2)neutral
To officially ask your boss or company if you can have a day (or more) off work, and get it confirmed.
"She booked off two weeks in August to go travelling with her family."
Hear it in context

I Cycled 2,000km Across Japan (It Almost Broke Me)
Abroad in Japan · 62:03
Book off, [music] hard off, jerk off, anything.

I Was A Secret Service Agent For 25 Years — Here’s What I Saw
Ian Bick · 25:31
he's pimping the book off to all his other college buddies.

Royal Society Young People's Book Prize 2025
The Royal Society · 28:07
a book off for the entire school in culmination for the prize.