不正宗可以怎么说英语

"Unauthentic" or "inauthentic" are English words that can be used to describe something that is not authentic or genuine. "Unorthodox" or "unconventional" are other words that could be used to describe something that is not traditional or typical. For example, you could say "This recipe is not authentic Italian cuisine; it's just an unauthentic imitation" or "This method of solving the problem is unorthodox and unconventional, but it still works."