The Litscape.com default word list is not a static word list. It is not a derivative list. It is an ever-evolving word list, with changes happening from further study of other sources, user submissions, manual reviews, algorithm tinkering, and the ever changing language. If you can say it, you can write it. A word is a word if you can use it in a sentence. The Litscape.com default word list is the best word list ever, anywhere, because it is made up of words we use.