Simply put, “anyway” without an S is correct. Always use it without the S. “Anyways” with the S is considered slang, and is a part of nonstandard, colloquial, or informal English. Furthermore, since “anyway” is an adverb and it is impossible for adverbs to be plural.

Is it correct to say anyway or anyways?

Which word is it, anyway? Anyway is a common adverb used to mean “in any case,” while any way is an adjective-noun phrase that means “whichever path” or “in any manner.” Anyways is the informal form of anyway. While less common in formal writing, anyways abounds in everyday speech or dialogue.

When did people start saying anyways instead of anyway?

The first known use of anyways was all the way back in the 13th century… meaning it's not a recent invention or an American one. And the s on anyways is the same s as you'll see on besides, towards, backwards, always, and quite a few other words, including family names such as Woods, Fields, and Rivers.