WordSoHard
Word definitions with Scrabble validity and tile score in one call, built for word games
Dictionaries · No auth · HTTPS
Dictionaries APIs
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Ordered by reported HTTPS, CORS support, no-auth access, then changed/observed facts. Access signals are not a popularity or quality score.
Random Lexicon
Random words and definitions using optional filters
Dictionaries · No auth · HTTPS
Wiktionary
Collaborative dictionary data
Dictionaries · No auth · HTTPS
SayItVid
English video pronunciation search with timestamps, IPA phonetics and subtitle context
Dictionaries · API key · HTTPS
Lingua Robot
Word definitions, pronunciations, synonyms, antonyms and others
Dictionaries · API key · HTTPS
OwlBot
Definitions with example sentence and photo if available
Dictionaries · API key · HTTPS
Free Dictionary
Definitions, phonetics, pronunciations, parts of speech, examples, synonyms
Dictionaries · No auth · HTTPS
Chinese Text Project
Online open-access digital library for pre-modern Chinese texts
Dictionaries · No auth · HTTPS
Indonesia Dictionary
Indonesia dictionary many words
Dictionaries · No auth · HTTPS
Collins
Bilingual Dictionary and Thesaurus Data
Dictionaries · API key · HTTPS
Merriam-Webster
Dictionary and Thesaurus Data
Dictionaries · API key · HTTPS
Oxford
Dictionary Data
Dictionaries · API key · HTTPS
Synonyms
Synonyms, thesaurus and antonyms information for any given word
Dictionaries · API key · HTTPS
Wordnik
Dictionary Data
Dictionaries · API key · HTTPS
Words
Definitions and synonyms for more than 150,000 words
Dictionaries · API key · HTTPS
Chinese Character Web
Chinese character definitions and pronunciations
Dictionaries · No auth · HTTPS not confirmed