1 C1 idiomatic slang
To enter into a romantic relationship with someone.
"They've been hanging out for months — I think they finally boo'd up over the holidays."
inseparable
boo up
C1 slang inseparable intransitive
To enter into a romantic relationship with someone; to become someone's partner.
In plain English
To get a boyfriend or girlfriend and start dating them.
What does "boo up" mean?
2 meanings, ordered from most common to least. Color-coded by CEFR level.
2 C1 idiomatic slang
(Of a couple) To spend time together as a romantic pair, often cosily at home.
"Everyone's boo'd up staying in this winter while I'm here single and bored."
inseparable
Literal vs figurative
Words literally mean
'Boo' is slang for a romantic partner; 'boo up' means to pair yourself up with your boo.
Actually means
To get a boyfriend or girlfriend and start dating them.
Usage tip
African American vernacular English (AAVE); widely used in social media, hip-hop, and R&B contexts. 'Boo' is AAVE slang for a romantic partner or terms of endearment. 'Boo up' means to pair off with someone romantically. Has spread beyond AAVE communities through social media and music.
Words that pair with "boo up"
Natural word combinations native speakers use most often.
with someone season winter together relationship
How to conjugate "boo up"
The five tense forms you'll use most often.
Base
boo up
I/you/we/they
3rd person
boos up
he/she/it
Past simple
booed up
yesterday
Past participle
booed up
have + pp
-ing form
booing up
continuous
Hear "boo up" in the wild
Listen to native speakers using "boo up" in real YouTube videos — click a clip to watch it on Looplines.
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