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on bro

What does on bro mean?

Used to emphasize sincerity at the end of a statement.

"That movie was trash on bro."

Origin

Part of the AAVE 'on [something you value]' oath family (on God, on mom, on everything). 'On bro' rose with Gen Z slang and the broad use of 'bro' for any close friend.

Frequently asked questions

What does on bro mean in texting?
It's a way of swearing something is true, like 'I promise.' It's short for 'on my brother.'
Does on bro mean your actual brother?
Not usually. 'Bro' here means a close friend or just a generic person you swear on, the same way people say 'on gang.'
Is on bro the same as on God?
Close. Both are oaths, but 'on God' is treated as more serious by some people. They're often used interchangeably.
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Slang definitions: FreeDict original editorial.