Wiktionary
Dictionaries
Collaborative dictionary data
No keyHTTPS
Free Dictionary
This API allows users to access word definitions, phonetics, and usage examples by sending a request with a specific English word. It serves as a resource for developers building applications that require linguistic data, enhancing learning and communication tools.
Verified 4 days ago: 43% uptime
API key
Not required
HTTPS
Supported
Browser calls
No, needs a proxy
Status
Live · 76/100
What our checks found
- Health score
- 76/100
- Reliability
- 43%
- Average latency
- 411ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Free Dictionary. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://dictionaryapi.dev/ENDPOINT" \
-H "Accept: application/json"This API does not send CORS headers, so a browser will block a direct call from your front end. Call it from your server, or put a small proxy in front of it.
Where this listing comes from
Aggregated from 2 public sources (freepublicapis, public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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The CTP API provides integration methods for connecting the functionality and content of the Chinese Text Project with external web applications. It consists of a Plugin API for adding external tools and a JSON API for leveraging CTP features externally.
No keyHTTPS
Synonyms
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Synonyms, thesaurus and antonyms information for any given word
API keyCORSHTTPS
Merriam-Webster
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Dictionary and Thesaurus Data
API keyHTTPS
Oxford
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Dictionary Data
API keyHTTPS
SayItVid
Dictionaries
English video pronunciation search with timestamps, IPA phonetics and subtitle context
API keyHTTPS
Free Dictionary — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Free Dictionary free to use?
Free Dictionary is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.
Does Free Dictionary need an API key?
No. We called Free Dictionary on 2026-09-18 with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.
Can I call Free Dictionary from browser JavaScript?
Not directly. Free Dictionary did not return CORS headers when we checked, so the browser will block your page from reading the response even though the request itself succeeds. Call it from a server, or put a small proxy in front of it.
Is Free Dictionary still working?
Yes, as of 2026-09-18. Our automated check reached Free Dictionary and recorded a 43% reliability score with a median response time of 411 ms. We re-check on a schedule, and this page updates with the result.
Is Free Dictionary available over HTTPS?
Yes. Free Dictionary serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.