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A free study site for English as a Second Language (ESL) students with games, quizzes, puzzles, MP3 files with transcripts, listening practice, pronunciation practive, etc.

Vocabulary.com helps you learn new words, play games that improve your vocabulary, and explore language.

Oxford Advanced Learner

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Free online English dictionary from Oxford, plus thesaurus, word of the day, resume examples, letter writing, and English grammar

The largest and most trusted free online thesaurus. Quickly find accurate and up-to-date synonyms, antonyms, and related words at Thesaurus.com. Synonym dictionary, antonym dictionary, words synonyms.

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Learn English with the About.com guide to English as a 2nd language (ESL / EFL). Learn English using resources including English grammar explanations, quizzes, pronunciation help, reading, listening and writing and esl free lesson plans. Exam resourc...

English on the internet. The best online resource for English as a second or foreign language (ESL / EFL), English exercises and activities, online English lessons with native speakers of English.

Information about English words derived from Latin and Greek sources and English vocabulary words with etymologies plus explanations. and quizzes

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