Genius or Genious? Which is correct?

Genius is the correct spelling of the word which means very intelligent. Genious is incorrect and should not be used in English. 

That kid is a genius! 

Genius 

A genius is usually defined as someone who is incredibly smart. 

Einstein was a genius who made a great contribution to science.

You need to be a genius to go to Harvard University.

Genious

Genius is a misspelling of genius. The word “genius” is often misspelt as “geniuos” because many words in English end in “ious” like “facetious” and “curious” and “devious”. 

Conor