Anyway is considered to be the usual type of word used when you want to say that “regardless” of something that you have said, there are still some things that remain to be the same. For example, you may say. “You can still go to the house since you are friends with my brothers anyway.”
It can mean that even if you are not friends with the person anymore, it does not matter because the person is a friend of your brothers. When you add an s to the word, this already becomes a slang, but the meaning still remains to be the same. Take note that anyway should not be confused with anyway. The meaning would change entirely when “anyway” is used.