is not found in my words list :-( 

For building your own list of words: download a lot of plain text files from Project Gutenberg (https://www.gutenberg.org/ebooks/42324) and make your own list of words. For example a word is valid if it exists in the work of at least 3 different authors.

Parsing Gutenberg's plain texts might be a project on its own though, it's simple but a bit tedious to remove preambles and colofons, abbreviations etc.