Brain Cramp

Oooookay, you erudite peoples, you.

I'm looking for a word. The word is slightly derogatory; it means roughly, "not from around here" or "flatlander". The word begins with an S. I don't know what language it's part of, or if it's cant or creole. It's something like sachenaw. I can almost hear it.

I hate when this happens.

Abundant Spanish Aunts.

Sassenach

Thanks to everyone who stopped by to help me solve this! I knew I could count on youse guys!