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A discriptive word saying what the speaker is referring to won't take too long so lets do it now. Originating from a form of 'really fast.'
"Hey, come here rightfast"

"Let's swing by the crib rightfast"
by dusty June 27, 2004
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2
another way to say "right quick"

meaning: to do something really fast; in a short amount of time
Person 1: Hey you hungry bro
Person 2: Yeah lets go to the store right fast
by lew6s September 15, 2019
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