Word means to applause some one on a good doing, to congratulate them.
"bruv big up Jerome, his lyrics are phat innit!"

"big up to all these homies in da hood, dis party is heavy"
by MC Ricksta February 18, 2005
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To be used as an exclamation of a noteworthy, celebratory, achievement, or other positive event. The volume, intensity and non-verbal cues used can be indexed to identify the level of accomplishment.
Example 1: two friends talking
Friend 1: man I've got great news: I've got a girlfriend now!
Friend 2: "jumps up from seated position, arms thrown in air, loudly yells" "BIG UPS!!!"

Example 2: waiting on a notification for food delivery

Food orderer: "alright food is on its way"
Hungry friend: "good deal. Big ups" ( not yelled loudly, the friend's tone or voice is at a normal conversation volume
by 77senor77siete77 June 22, 2021
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a show of respect, also see props.
big up to Kobe on merkin that trick in court
by herbmanhustlin March 20, 2005
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An exclamatory term usually proclaimed for a positive, surprising, or celebratory event. The volume at which it's said, any additional adjectives or sentence enhancers, or duration determines the level in its hierarchical context.
Friend: "Man, I just broke up with my ball and chain girlfriend today"

You: "Big Ups man!! You're free again, let's go find some ass to help you out!!"
by 77senor77siete77 July 1, 2021
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