Endearment for a partner or crush — "my boo" = "my person." Older than "bae," slightly more romantic than "bestie." Still widely used in texts, birthday captions, and R&B lyrics from 2004 to forever.
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# Boo (2023 film) Boo (2023 film) 2023 Indian horror thriller film | Boo | | --- | | [](https://en.wikipedia.org/wiki/File:Boo_(2023_film).jpg…
Endearment for a partner or crush — "my boo" = "my person." Older than "bae," slightly more romantic than "bestie." Still widely used in texts, birthday captions, and R&B lyrics from 2004 to forever.
"Missing my boo."
'Boo' as a term of endearment means 'sweetheart', 'baby', 'darling'. It is used for romantic partners and very close friends, originally from African-American Vernacular English and popularised through R&B and hip-hop. 'Hey boo' is a warm greeting. If your teen calls a partner or friend 'boo' they are using affectionate American slang. Harmless. Distinct from the Halloween 'boo!' (a startle word) and the disapproving 'boo!' (heckling).
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
Add your own interpretation of "boo".
Head-to-head pages explaining the difference.
How people talk about dating apps, modern romance, and the situationships they swear they're over — from ghosting and breadcrumbing to soft-launching, hard-launching, and the ick.
See all Relationships & Dating slang on Slangora.
Browse all slang words starting with B.
Romantic partner — short for "Before Anyone Else." By the mid-2020s slightly millennial-coded but still in active use, especially in captions and texts. Gen Z is more likely to write "boo," "my person," or just the name.
The state of being fully locked into your relationship, acting couple-brained, and centering your significant other in basically every decision or vibe. Someone in boo mode is texting back immediately, mentioning their person constantly, declining plans because they'd rather stay in, and radiating that 'I'm taken and happy about it' energy. It's not toxic — it's just deeply couplified. Friends tend to notice when someone goes boo mode because it often means fewer group hangs and a new softness in someone's whole personality.
To start a romantic relationship with someone.
# Boo (programming language) Boo (programming language) | | | | --- | --- | | [](https://en.wikipedia.…
'Boo' as a term of endearment means 'sweetheart', 'baby', 'darling'. It is used for romantic partners and very close friends, originally from African-American Vernacular English and popularised through R&B and hip-hop. 'Hey boo' is a warm greeting. If your teen calls a partner or friend 'boo' they are using affectionate American slang. Harmless. Distinct from the Halloween 'boo!' (a startle word) and the disapproving 'boo!' (heckling).
'Boo' as a term of endearment means 'sweetheart', 'darling', used for romantic partners and very close friends. Originally African-American Vernacular English, now mainstream English-language pop usage. Register: informal, affectionate. In formal English use 'partner', 'sweetheart' or simply names. A common learner mistake is to confuse the affectionate 'boo' with (a) the startling exclamation, (b) the disapproving heckle at performances — three distinct meanings spelled identically; context and intonation disambiguate.
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“# Boo (2023 film) Boo (2023 film) 2023 Indian horror thriller film | Boo | | --- | | [](https://en.wikipedia.org/wiki/File:Boo_(2023_film).jpg)<br>Official release poster | | Directed by | [Vijay](https://en.wikipedia.org/wiki/A._L._Vijay "A.”
“# Boo (programming language) Boo (programming language) | | | | --- | --- | | [](https://en.wikipedia.org/wiki/File:Question_book-new.svg) | This article **needs additional citations for [verification](https://en.wikipedia.org/wiki/Wikipedia:Verifiability "Wikipedia:Verifiability")**.”
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A close acquaintance or significant other.
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A derisive shout of the word 'boo' made to indicate disapproval.
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To make a sound characteristic of cattle; to moo.
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A tail feather from an ostrich.
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To shout extended boos at, as a form of disapproval or derision.
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To shout extended boos derisively.
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Describing someone who radiates soft, devoted, relationship-ready energy — the kind of person who seems built to be someone's person. Boo coded individuals are warm, attentive, low-drama, and have a vibe that screams 'I will remember your coffee order and check in when you're stressed.' It's a compliment flagging romantic potential and emotional availability. Not necessarily taken, but clearly the type. The boo coded person makes you feel cared for before anything official has even been established.