boo up
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To start a romantic relationship with someone.
Register: slang
Where it’s used:
Used
American English
Examples
Although the No. 1 single “As It Was” set the shimmying, shimmering stage for the album — with its ’80s pogo pop that has you breaking out your best Molly Ringwald moves — the second half of “Harry’s House” settles into dreamy, woozy balladry that will have you booing up. Or getting on Tinder to fin
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “boo up” mean?
To start a romantic relationship with someone.
Is “boo up” formal or informal?
boo up is generally slang.