Applications :: Using Spanish Microsoft Word Auto-correct?

For some reason my auto-correct has a dictionary based in spanish. Example: when editing my resume I have put down the word Administrative , but it says it is wrong and gives suggestions such as Administrativa or Administrativo.

I have changed the spell check options to only have US english as the default setting and this suddenly pops up. I never put Spanish in my international language settings on the mac, nor have I had someone who speaks spanish use the computer.