Dunder-Head 

A Not so smart person.

Your not supposed to read a book upside down you Dunder-Head!

Dunder-Head by Ethstar99 June 21, 2022

Dunder head 

A blow job

I got dunder head last night

Dunder head by superJOSHgaming February 22, 2021

Dunder Head 

Someone that is dumb or stupid

Dude this Dunder headed bitch fucked my order up again!!!

Dunder Head by Flipflop74 August 19, 2016

dunder head 

1) A drunkard, someone intoxicated, currently also construed as a numb skull or someone who is thick headed in nature.

1- Don't be such a dunder head

dunder head by cunninglinguist May 5, 2005

Dunder head 

Informal: a stupid person
Synonym: fool, halfwit, nincompoop, blockbead, dunce, dolt, ignoramus, cretin, imbecile, Dillard, moron, simpleton, clod.

A Sharynism. Denoting someone of low importance and low intelligence.

Everyone knew them to be dunder heads.

Dunder head by Dizzy_D May 26, 2018

Dunder Head 

a retarded Scottish person

Person1: Your such a dunder head
Person2:ouch that hurt man

Dunder Head by King_Kumara June 16, 2020

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