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.
-Let's get up and move over to that table, so no one will look over and see us near her.
by Ross Welborn January 17, 2005
Used to describe a person, place, thing, situation, feeling, action, or thought that is overwhelmingly cool and/or hella awesome.
by Sir Raddxcore Radish July 11, 2008
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's do not, or ever will listen to any Usta-Groover"
"That Def-Radder is the Gnarliest Mother Effer I ever Met!"
by Don_Mayhem January 27, 2010