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1.
a dumbass and a newbie to certain things
I'm such a dumbie at wood working
by Sheep March 20, 2004
 
2.
A stupid ass dumb bitch.
Man you a dumbie!
by Frank Lucy September 04, 2011
 
3.
Someone who is dumb; an unsmart being.
Quit being a dumbie
by Rudo March 29, 2003