in addition to meaning more rad, this can also mean the opposite. Radder can describe a short, on the brink of being a midget girl who is very loud and obnoxious, mainly in public places. attracts attention to where attention is not wanted. Usually a Radder has heavy make up and dresses towards to 80's revival.

-Damn that Radder is obnoxious.
-Let's get up and move over to that table, so no one will look over and see us near her.

Radder by Ross Welborn January 17, 2005

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RadderBall

Taking adderall and chasing it with Red Bull. Red Bull + adderall = Radderball

John: Jake did you just take adderall and drink a Red Bull with it?

Jake: Yup, its called a RadderBall!

RadderBall by PARAD0X69 November 25, 2013

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Def-Radder

a person that is Definitely Rad; an association of Gnarly People; believers of the Rad Harmony Faith; People that are allergic to Lame; Epic Lame-Slayers from Slutty Utah; anyone Awesome;

"Priest Rev. Jonson, Kung-Boo, and the Slutty Martinez Brothers are Def-Radder Lame-Slayers, and the Fathers of Rad Harmony!"

"Def-Radder's do not, or ever will listen to any Usta-Groover"

"That Def-Radder is the Gnarliest Mother Effer I ever Met!"

Def-Radder by Don_Mayhem January 27, 2010

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Team-raudery

When the team spends a week team building and then finds out they are switching to another team and instead of saying "What the fuck".

I can't believe we have been agile training all week and then they go and change the teams, there goes Team-raudery!

Team-raudery by forwardslashdotj November 19, 2020

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