Can anyone provide me with a list of English words that are their own antonyms?

I am looking for a list of all English words that are their own antonyms. Off the top of my head, I can only think of "either", "fast", "to dust" and "to lease", but there must be dozens more. Can you provide a link to a comprehensive list, if such exists?

Also, what are such words most commonly called? I like the term "Janus word" I once heard, but is that widely understood?

^{_{Edited by popular demand to make it absolutely clear that this is not a community wiki poll.}}

Answer

I think you're referring to Auto-antonyms. They are not the same word but a homograph (a word of the same spelling) that is also an antonym. I guess, Janus word is also acceptable.

There was a list on Wikipedia (List of Auto-antonyms in English), since moved to Wiktionary's Appendix of English contranyms.