Wiktionary
FreeLiveLast verified 24 Sept 2026
Wikimedia's collaborative dictionary: word definitions, etymologies, and translations by page title.
Example request
curl 'https://en.wiktionary.org/w/api.php?action=query&titles=hello&prop=extracts&format=json&explaintext=1'
Free tier, in plain English
Free and keyless; anonymous requests are capped per-query but there's no published daily call limit.
Alternatives in Dictionaries
Chinese Text ProjectFull texts and metadata for pre-modern Chinese philosophy, history and literature works.FreemiumDatamuseFinds words matching meaning, sound, spelling pattern or related-word constraints for language tools.FreeeeemojiLooks up emoji metadata by name: keywords, category, platform shortcodes and skin-tone variants.FreeFree Dictionary APIEnglish word definitions, phonetics, parts of speech, examples and synonyms, no key needed.FreeMerriam-WebsterWord definitions, etymology, audio pronunciation and thesaurus data from Merriam-Webster's reference works.Freemium