Licensing & Attribution

Thesaurus.co uses lexical data derived from open lexical resources including Open English WordNet and Princeton WordNet where applicable.

Open English WordNet

Open English WordNet is developed by the Global WordNet Association and contributors. It is available under Creative Commons Attribution 4.0.

Princeton WordNet

Princeton WordNet is made available under its own license. Open English WordNet is derived from Princeton WordNet and further developed by the Global WordNet Association.

Editorial content

Better-word essays, words-for guides, and blog posts on Thesaurus.co are original editorial content. All rights reserved.

No proprietary scraping

Thesaurus.co does not scrape or reproduce content from proprietary dictionary or thesaurus sites.