The Free Dictionary API provides access to dictionary data sourced from Wiktionary. It allows users to retrieve definitions, pronunciations, synonyms, antonyms, and translations for words in various languages without requiring an API key.
Build a quick dictionary lookup widget, language-learning flashcards, or a writing assistant that shows definitions and pronunciations. You get structured JSON entries, forms, examples, pronunciations and optional translations sourced from Wiktionary. The API is keyless and CORS-enabled so you can prototype in minutes. Note the rate limit of 1,000 requests per hour per IP.
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