Top Definition
Synonymous with turbo awesome, amazeballs, incredible, dope, rad, etc. (Antonym = pump down)
Your ex-boyfriend's new girlfriend is legitimately woof? Pumpup!

Your new beta boyfriend wants you to meet him in NYC this weekend.....so he sends his private jet to fetch you? Pumpup!

Taking off your boat shoes to put on your golf shoes? Pumpup!
by chewtoy33 June 29, 2012

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