There's a reverse engineering of What3Words from a few years ago floating around out there called "What Free Words". It includes what claims to be their word li

There's a reverse engineering of What3Words from a few years ago floating around out there called "What Free Words". It includes what claims to be their word list. I imagine the researcher is familiar with this but has chosen not to include it in their research. (W3W is very aggressive about pursuing possibly spurious IP claims to remove any trace of What Free Words. In the past, even mentioning it in a comment like this is enough to attract a DMCA complaint.)