neandernerd 

Someone whose thuggish or unsophisticated demeanor masks sophisticated technical ability.

Don't fuck with him. If he finds out who you are he'll deface more than your homepage. Proper neandernerd.

neandernerd by Dr Congo1 October 17, 2008

neandered 

Someone that steers into your lane without using the signals of the car like a neanderthal

Honda Civic turns into my lane, almost crashes. "Mother fucker that guy just neandered into my damn lane!"

neandered by RedlineLucario July 29, 2021

Neandertard 

Contracture of Neanderthal and Retard (or Fucktard)

Used to describe a complete thick, retarded mong

U fucking neandertard!!

Neandertard by Bryn December 5, 2004

Neandertard 

When you’re not sure if you’re friends just unevolved pr retard

That boy John acts like a straight neandertard

Neandertard by God Logan August 14, 2019