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Find definitions for over 300,000 words from the most authoritative English dictionary. Continuously updated with new words and meanings.

The most popular dictionary and thesaurus for learners of English. Meanings and definitions of words with pronunciations and translations.

3 days ago · The World's most comprehensive free online dictionary, thesaurus, and encyclopedia with synonyms, definitions, idioms, abbreviations, and medical, financial, legal specialized …

The largest and most trusted free online dictionary for learners of British and American English with definitions, pictures, example sentences, synonyms, antonyms, word origins, audio …

Dec 15, 2025 · Wiktionary has grown beyond a standard dictionary and now includes a thesaurus, a rhyme guide, phrase books, language statistics and extensive appendices. We aim to …

The OED is the definitive record of the English language, featuring 600,000 words, 3 million quotations, and over 1,000 years of English.

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The much-anticipated Fifth Edition of The American Heritage Dictionary of the English Language is the premier resource about words for people who seek to know more and find fresh …

Longman English Dictionary - the leading dictionary for learners of English of all levels: definitions, idioms, examples and more.