Anti-genius 

The literal opposite of a genius. i.e. the previous poster of the definition of this word (a negative and a positive do not make a double negative).

An anti-genius cannot be any simpler to explain.

"I can't believe that guy thinks he's so smart. He's an anti-genius."

Anti-genius by UnknownDJ November 21, 2021

Anti-genius 

Someone who is smarter than luck, smarter than genius and smarter than brilliance. Elon Musk, Steve Jobs, Bill Gates all fall in this category. Anti is a negative word, genius is a positive word which makes it a double negative.

Elon Musk is going to Mars, that man is anti-genius.

Anti-genius by Skyman88 January 26, 2020