book up
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
Meaning · English
To reserve or book all of something, for example by purchasing all the tickets.
Where it’s used:
Used
American English
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
Meaning · English
To have all of its tickets or reservations purchased.
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 3
Meaning · English
To study opening lines in great detail in order to gain an advantage.
Register: slang
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “book up” mean?
To reserve or book all of something, for example by purchasing all the tickets.
Is “book up” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.