dunder heed 

scottish slang to describe some one who's intelligence is below average

that guy is a dunder heed

dunder heed by lolee July 8, 2005

Dunderhead

A person with no intelligence

Idiot,Plonker,Pillock,Klutz
Dunce,Numskull, Blockhead, Bonehead, Lunkhead, Hammerhead, Knucklehead,Muttonhead, Shithead,Fuckhead

''what you doing!'' ahh you dunderhead!''

Dunderhead by sweet jesus July 10, 2006

doo-doo dunderhead 

Very dimwitted

They're the dumbest of the dumb, the stupidest of the stupid. They're doo-doo dunderheads.

doo-doo dunderhead by Chinnay May 12, 2016

dunderheid

idiot, simpleton, one not possessed of all their mental faculties

Yer aff yer heid ya dunderheid, that's no' a real dug

dunderheid by morgan nicholson September 3, 2006

dunderhead

a stupid or slow-witted person

That WholeLotta Luv guy is a complete dunderhead for dumping that cute fairy girl!

dunderhead by Kilmeny Mistwallow January 2, 2012

dunderhead

A person that says something that makes everyone in the room go "wtf???"

Dude 1: I think Justin is better than Britney because he is cuter!!!!!!!!
Entire room: *slowly backs away*
Dude 2: Who invited the dunderhead?

dunderhead by Dunce! ! ! January 16, 2011

dunderhead

A fan of the show "The Office" on NBC. The word stems from the fictitious paper supply company "Dunder Mifflin" featured in the show.

You can be sure a dunderhead will be plopped down in front of a T.V. at 9/8c every Thursday night.

dunderhead by Jake Wetherall November 19, 2007