Read docs Updated 2026-06-17
What is Words?
The Words API supplies lexical data consisting of definitions and synonyms drawn from a database of over 150,000 words.
It is intended for developers who need to integrate word lookup features into NLP pipelines, dictionary applications, or language-processing services.
What you can build with Words
Build a dictionary lookup feature
Query the API to fetch definitions and synonyms for user-entered words inside web or mobile dictionary apps.
Enhance writing tools with synonyms
Integrate synonym suggestions into text editors or email clients to help users vary vocabulary and avoid repetition.
Power word games and quizzes
Retrieve definitions or synonyms on demand to generate hints, validate answers, or create vocabulary challenges in games.
Get started with Words
- 1Sign up on the provider site and obtain an API key
- 2Read the documentation to identify supported endpoints and parameters
- 3Make HTTPS GET or POST requests including the API key in headers or query string
- 4Parse the returned JSON for definitions and synonym lists
- 5Add error handling for unknown words or exceeded rate limits
Words: pros & cons
Pros
- +Covers more than 150,000 English words
- +Returns both definitions and synonyms in one call
- +Uses HTTPS for secure requests
- +Simple API key authentication
Cons
- –Requires an API key for every request
- –English language only
- –No usage limits or pricing details provided in description
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Frequently asked questions
It returns definitions and synonyms for English words from a vocabulary of over 150,000 entries.
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