Synonyms API

API

Free API for synonyms, thesaurus, and antonyms data

Overview

The Synonyms API allows developers to fetch synonyms, antonyms, and thesaurus entries for any input word. It offers RESTful endpoints accepting word parameters and optional part-of-speech filters to refine results. Responses are structured in JSON, including word alternatives, part-of-speech categorization, and brief usage context (where available). Use cases include enhancing content writing tools, building vocabulary apps for education, integrating into grammar checkers, or powering word games requiring synonym/antonym generation.

Example Integration (JavaScript)

script.js JS


fetch('https://www.synonyms.com/synonyms_api.php')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful Interface
JSON Response Format
Synonym/Antonym Lookup
Thesaurus Entries
Part-of-Speech Filtering

Frequently Asked Questions

? Is the Synonyms API free to use?

Yes, the Synonyms API provides free access for basic lookup. High-volume usage may be subject to rate limits.

? Does it require an API Key?

The API may require an API key for full access. Refer to the official documentation for authentication details.

? What is the response format?

Responses are returned in JSON format, including synonyms, antonyms, part-of-speech tags, and optional usage context.

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Tool Info

Pricing Free

Category Dictionaries

Platform Public API

Pros

⊕ Easy to integrate
⊕ Comprehensive word data
⊕ Fast response times
⊕ Supports part-of-speech filtering

Cons

⊖ Rate-limited for high-volume requests
⊖ No official SLA
⊖ Limited contextual synonym data
⊖ No XML response option