Words Containing ATS and Ending in O

Making a list of words with ATS that end in O? Sounds fun. Also sounds pretty specific. A list like that could go a long way, we're sure. This complete word list is tailored to your search parameters, whether they are words with ATS or words that end in O. Or both, obviously.

6 letter words1 Word
whatso
5 letter words1 Word
fatso