Thesaurus API

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

/v1/thesaurus

HTTP GET

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.

Sample Request URL

Live Demo!

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

Sample Response

{
  "word": "bright",
  "synonyms": [
    "hopeful",
    "shiny",
    "brightly",
    "lustrous",
    "bright",
    "burnished",
    "smart",
    "shining",
    "promising",
    "vivid",
    "undimmed",
    "brilliant",
    "brilliantly"
  ],
  "antonyms": [
    "dimmed",
    "dull"
  ]
}


import requests

word = 'bright'
api_url = 'https://api.api-ninjas.com/v1/thesaurus?word={}'.format(word)
response = requests.get(api_url, headers={'X-Api-Key': 'YOUR_API_KEY'})
if response.status_code == requests.codes.ok:
    print(response.text)
else:
    print("Error:", response.status_code, response.text)
var word = 'bright'
$.ajax({
    method: 'GET',
    url: 'https://api.api-ninjas.com/v1/thesaurus?word=' + word,
    headers: { 'X-Api-Key': 'YOUR_API_KEY'},
    contentType: 'application/json',
    success: function(result) {
        console.log(result);
    },
    error: function ajaxError(jqXHR) {
        console.error('Error: ', jqXHR.responseText);
    }
});
const request = require('request');
var word = 'bright';
request.get({
  url: 'https://api.api-ninjas.com/v1/thesaurus?word=' + word,
  headers: {
    'X-Api-Key': 'YOUR_API_KEY'
  },
}, function(error, response, body) {
  if(error) return console.error('Request failed:', error);
  else if(response.statusCode != 200) return console.error('Error:', response.statusCode, body.toString('utf8'));
  else console.log(body)
});
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import com.fasterxml.jackson.databind.ObjectMapper;

URL url = new URL("https://api.api-ninjas.com/v1/thesaurus?word=bright");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("accept", "application/json");
InputStream responseStream = connection.getInputStream();
ObjectMapper mapper = new ObjectMapper();
JsonNode root = mapper.readTree(responseStream);
System.out.println(root.path("fact").asText());
let word = "bright".addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)
let url = URL(string: "https://api.api-ninjas.com/v1/thesaurus?word=" + word!)!
var request = URLRequest(url: url)
request.setValue("YOUR_API_KEY", forHTTPHeaderField: "X-Api-Key")
let task = URLSession.shared.dataTask(with: request) {(data, response, error) in
    guard let data = data else { return }
    print(String(data: data, encoding: .utf8)!)
}
task.resume()
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.