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Etymology

Listings
A scholarly association dedicated to the study of the English language in North America.
http://www.americandialect.org/
Devoted to etymology of common words and slang phrases.
http://www.wordorigins.org/
Exploring English words that are derived from Latin and Greek sources with etymologies and vocabulary activities.
http://www.wordexplorations.info/
An advanced Latin-Greek-English vocabulary source of etymologies with thematic units of roots, prefixes, and suffixes, and vocabulary quizzes.
http://www.wordfocus.com/
History and evolution of more than 30,000 words, including slang and technical terms.
http://www.etymonline.com/
Relates medical terminology to the humanities, offering a weekly overview with references to classical etymology.
http://www.pandorawordbox.com/
Weekly etymology magazine.
http://www.takeourword.com/
Words and language in a humorous vein. The online version of The Word Detective, a newspaper column answering readers' questions about words and language. Written by Evan Morris.
http://www.word-detective.com/
Includes a searchable database of Latin and Greek roots and affixes, a free newsletter, and links to other sites.
http://www.wordsources.info/
Collection of recently coined words, existing words that have enjoyed a recent renaissance, and older words that are now being used in new ways.
http://www.wordspy.com/