Free Dictionary API
FreeDownNot yet verified
English word definitions, phonetics, parts of speech, examples and synonyms, no key needed.
Example request
curl 'https://api.dictionaryapi.dev/api/v2/entries/en/hello'
Free tier, in plain English
Completely free with no key or account; maintainer notes it handles over 10 million requests a month.
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.FreeMerriam-WebsterWord definitions, etymology, audio pronunciation and thesaurus data from Merriam-Webster's reference works.FreemiumOxford Dictionaries APIDefinitions, pronunciations, synonyms and translations from Oxford's dictionary data, by word lookup.