There is no such word as "alright." The expression is "all right," two words. "Alright" is a frequent mistake made because of the analogy of the words "altogether" and "already."
Oops. Well, that is what I was taught but I see that it may be myth. Let me try it this way.
"All right" is safe because everyone agrees that it is correct. "Alright" is risky because some people like me think it is incorrect.