How do you spell foriour?

"Fourior" is not a standard English word. It's likely a misspelling of one of the following:

* Fourier: This refers to a mathematical concept or a person named Fourier.

* Furious: This means feeling or showing extreme anger.

* Four: This refers to the number 4.

Please provide more context or the sentence you are trying to write so I can help you figure out the correct spelling.