http://www.languageguide.org/english/
http://www.openlearningcenter.com/learning/Vocabulary
http://www.learnenglish.de/vocabpage.htm
http://www.englishpage.com/vocabulary/vocabulary.html
http://www.englishclub.com/vocabulary/index.htm
http://www.englisch-hilfen.de/en/exercises_list/alle_words.htm
http://a4esl.org/q/h/vocabulary.html
http://esl.about.com/library/vocabulary/bl1000_list1.htm
http://www.better-english.com/vocabulary.htm
http://eleaston.com/vocabulary.html