Scottish usage:
a) Someone who (sometimes unwittingly) by speech or action demonstrates a lack of knowledge or misconception of a particular subject or situation to the amusement of others.

b) A good humoured admonition, a term of endearment

c) A reckless, absent minded or unwise person
a) "No. That wisnae wit she meant, ya big numpty!"

b) i.e. "Silly billy", "You big dafty"

c) "That numpty's driving with no lights on!"
by cargo_4 May 20, 2004
Woody was a numpty for misplacing his iPhone at the strip club.
by 1367 November 20, 2012
a scottish term, short for numb-skull.
idiot
pratt
wally
" away n'shite, ya fuckin' Numpty "
by Lord Howard Hurtz March 24, 2004
"She is an absolute Numpty"
by Young Team September 18, 2006
Someone who confidently asserts themselves towards a false truth in the presence of others. Even when the rest of the people there know that they are completely wrong.
Given the choice of a shovel or a ladder to get out of a hole, they have dug themselves, a numpty would confidently choose the shovel!
by Marc Hone February 7, 2006
Someone who has had a momentary lapse in judgement and done something ignorant or stupid.
Person A: leaves their car keys in the fridge when getting a glass of milk.
Person B: " why were your car keys in the fridge you numpty
by xXTikaXx January 9, 2007
Somebody who's stupid. Basically me, stripped of my privileges.
Everybody told her to study for the exam lest she fail like a numpty would. She partied all week and failed the exam. To this day, she still says "she believed she could so she did."
by ChristeenG April 30, 2018