http://dictionary.reference.com/wordoftheday/wotd.rss

http://feeds.feedburner.com/techtarget/SecretWordOfTheDay

Word of The Day

http://feeds.almanac.com/almanac-word

http://xml.education.yahoo.com/rss/wotd/

http://www.oed.com/rss.xml

http://www.onelook.com/wotd_rss.php