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Cambridge English Dictionary
Choose from corpus-informed dictionaries for English language learners at all levels. They’re ideal for anyone preparing for Cambridge English exams and IELTS. The English dictionary includes the Cambridge Advanced Learner’s Dictionary, the Cambridge Academic Content Dictionary, and the Cambridge Business English Dictionary. The Cambridge Learner’s Dictionary is perfect for intermediate learners.
Website: Cambridge English DictionaryCollins English Dictionary
An unparalleled resource for word lovers, word gamers, and word geeks everywhere, Collins online Unabridged English Dictionary draws on Collins extensive language databases and covers many literary and rare words useful for crossword solvers and setters as well as Scrabble players.
Website: Collins English DictionaryLongman
Welcome to Longman Dictionary of Contemporary English Online
Website: LongmanMerriam-Webster Dictionary
Website: Merriam-Webster DictionaryOxford English Dictionary
An unsurpassed guide for researchers in any discipline to the meaning, history, and usage of over 500,000 words and phrases across the English-speaking world.
Website: Oxford English Dictionary