Overview
Synonyms.com API provides synonym, antonym, and thesaurus data for English words, making it useful for writing assistants, word games, and vocabulary tools. Accessing the API requires an API key available via the Synonyms.com website. The response includes related words grouped by relevance and part of speech.
Beginner Tip
Query a single lowercase word at a time for the most reliable results. The response nests synonym groups by part of speech, so iterate over each pos object to collect all related words.
Available Data
The kind of data this API exposes, based on its documentation. We could not call the endpoint to confirm the exact field names.
Example Response
Illustrative shape only — we were not able to call this endpoint (it requires credentials or exposes no public sample URL), so the fields below show the kind of data this API returns rather than a recorded response.
{
"status": "success",
"data": {
"result": "Data from Synonyms",
"description": "Synonyms, thesaurus and antonyms information for any given word",
"timestamp": "2025-01-15T10:00:00Z"
}
} Field Reference
query The word that was queried. synonyms Synonym groups organized by part of speech (noun, verb, adjective, etc.). antonyms Antonym groups organized by part of speech. related List of related words and phrases not strictly synonymous. Implementation Example
Calls a real endpoint of this API. Replace any placeholder credentials with your own key.
const url = "https://www.synonyms.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
Common Errors & Troubleshooting
Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.
Metadata Score Breakdown
Estimated from metadata — endpoint not independently tested
Metadata estimate · endpoint not independently tested
Technical Specifications
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