Imbeceillic 

A stupid or idiotic action that has been done by someone.

It can be used when you are trying to sound sophisticated and british and want to find alternatives to the word imbecile

Throwing a paper ball at the physics teachers was quite an imbeceillic action of him

Imbeceillic by Craving donut September 1, 2023

imbecilic

im·be·cil·ic (mb-slk)
1. Stupid; silly.
2. Well below par in mental acumen.

You Are Acting Imbecilic

imbecilic by NuroMusic November 4, 2013

Imbecilicus Argumenticus

An absolutely idiotic, half-baked, utterly stupid and often hypocritical argument that makes you look like a meathead.

"I think the death penalty is good, even if it does kill innocent people now and again. I think anyone who kills an innocent person is a murderer and deserves the death penalty."

It doesn't get any more imbecilicus argumenticus than that.

Imbecilicus Argumenticus by Keep The Reason October 26, 2012

imbecilicide 

to kill a human who is so stupid that average people can not stand it!

I'm going to commit imbecilicide if you don't figure out what you're doing and get out of my way!

imbecilicide by Zanne5454 January 30, 2012

Imbicillic

Someone who is stupid, very very very stupid.

“She thought water was purple”
“How imbicillic”

Imbicillic by Ohno May 10, 2018

Imbecillin 

An imaginary drug one accuses another of having taken to explain their excessive stupidity.

I can't believe you were so drunk, that you got naked at the company Christmas party! Have you upped your dose of imbecillin?

Imbecillin by Michaeladt January 9, 2009

imbecilicus maximus 

The stupidest and idiotic thing imaginable, be it a belief, a choice, or a thing.

The recently deceased imbecilicus maximus used a lit match to look into their gas tank. Identification of the remains is pending a review of dental records.

imbecilicus maximus by Keep the Reason December 13, 2016