Welcome to the Wordnik API!

Request definitions, example sentences, spelling suggestions, synonyms and antonyms (and other related words), word phrases, pronunciations, random words, words of the day, and much more. Sign up today!

With the Wordnik API you get:

  • Definitions from five dictionaries, including the American Heritage Dictionary of the English Language, the Century Dictionary, Wiktionary, the GNU International Dictionary of English, and Wordnet, covering more than 800,000 words
  • Synonyms, antonyms, and other word relations
  • Real example sentences and links to their sources for more than 10,000,000 words
  • Audio pronunciations
  • A word-of-the-day API
  • A random-word API
  • and more coming soon!
By using & supporting the Wordnik API, you contribute to our non-profit mission to find, document, and share every word of English.

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