NewConnect Claude, Cursor, ChatGPT, and other AI agents to API Ninjas via our MCP server

Thesaurus API

The Thesaurus API allows you to look up synonyms (similar words) and antonyms (opposite-meaning words) for any English word.

(4.7)

From 5,075 users

800+

Applications using this API

API Status

Online - All Systems Operational

API Response Times

Average
P50
P75
P90
P95
307ms329ms348ms699ms1194ms

Didn't find what you were looking for? Suggest an improvement


/v1/thesaurus GET

https://api.api-ninjas.com/v1/thesaurus

Returns a list of synonyms and a list of antonyms for a given word.

Parameters

  • word  required

    Word to look up.

Headers

  • X-Api-Key  required

    API Key associated with your account.

Response

A JSON object with the following fields or an error if the request is unsuccessful.

  • word

    The word that was looked up.

  • synonyms

    Array of synonym strings (words with similar meanings).

  • antonyms

    Array of antonym strings (words with opposite meanings).

Sample Request Live Demo!

word

Try this API endpoint with all available parameters in our API playground

https://api.api-ninjas.com/v1/thesaurus?word=elegant

Headers

X-Api-KeyLog in or sign up to get your API Key

Sample Response

JSON

Code Examples

1 2 curl -X GET "https://api.api-ninjas.com/v1/thesaurus?word=happy" \ -H "X-Api-Key: YOUR_API_KEY"

If your programming language is not listed in the Code Example above, you can still make API calls by using a HTTP request library written in your programming language and following the above documentation.