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Big Huge Thesaurus API

Use the Big Huge Thesaurus API to get synonyms for words, as well as antonyms, related terms, and similar terms. This is a free, English language thesaurus with over 145,000 words. No API key required if you make fewer than 10,000 calls per day. Version 1 has simple output, and version 2 has enhanced output, including the part of speech and relationships to the submitted word.

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Big Huge Thesaurus: Highlights

Thesaurus lookup services
Data Formats
XML, JSON, JSONP, Serialized PHP, Text
API home

Big Huge Thesaurus: Specifications


Client Install Required
Service Endpoint

Signup and Licensing

Signup Requirements
None if under 10,000 calls per day, if more needed, sign up for API key and pay the monthly fee  
Developer Key Required
Account Required
Commercial Licensing
Non-Commercial Lic.
Data Licensing
Usage Fees
None if under 10,000 requests per day. If more needed, pay a monthly fee to obtain API key. Plus any usage requires a link back to their site from your site.  
Program Fees
Certification Program
Usage Limits
10,000 requests per day per IP address free and without API key, for more usage, obtain an API key 
Terms of Service
Terms of use 


Authentication Model
API key required if requesting more than 10, 000 times per day 
SSL Support
Read-only Without Login


Vendor API Kits
Community API Kits
API Blog
Site Blog
API Forum
Developer Support
Console URL

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Mashups, Developers & Source Code

Mashups using Big Huge Thesaurus[ Add a mashup ]

Developers using Big Huge Thesaurus[ Add me ]

  • dugrocker
  • ProtoDojo

Source Code for Big Huge Thesaurus[ Add a source code link ]

There are no source code libraries or how-to links for Big Huge Thesaurus. If you know one why not add it?

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