Nisus Software, Inc.
Nisus Thesaurus icon
Nisus Thesaurus
Free Thesaurus for macOS
⬇ Current Version
• Requires macOS 10.15 Catalina or later
• Supports Apple Silicon
⬇ Prior Version
• For Mac OS X 10.11 or later
• Version Archive
Try Our Word Processor!
Nisus Writer Pro is our powerful, easy to use word processor for your Mac. With our legendary easy interface, powerful features, and Microsoft Word compatibility, you can spend your time focusing on what matters: your writing!
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    • What is Nisus Thesaurus?
    Nisus Thesaurus is a fast electronic thesaurus that works with any services-aware application including Safari, Apple Mail, TextEdit, and more.

    Nisus Thesaurus integrates seamlessly with Nisus Writer Pro and Nisus Writer Express.

    Nisus Thesaurus is completely free, without any ads or tracking.

    Read more on the Nisus Thesaurus main page.


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