Thesaurus Rex app icon

Offline Word Power

Thesaurus Rex

A fast, fully offline thesaurus and dictionary app built for focused writing. Search instantly, navigate related terms, and explore definitions without ads, subscriptions, or network dependency.

Explore Features How It Works

Core Functionality

Offline Search

All data is bundled with the app, so lookups are immediate and private. No cloud calls are required for normal use.

Dual Lexical Sources

Combines WordNet definitions and relationship structure with the broad synonym coverage of Moby Thesaurus.

Cross-Platform Build

Runs on iOS, macOS, Windows, Linux, Android, and web builds using the same core codebase.

How It Works

  1. Enter a word. Type in the search bar and press Enter.
  2. Review definitions and related terms. WordNet entries and thesaurus relationships are shown in a clean, readable layout.
  3. Follow links to branch your search. Tap related words to navigate quickly through synonyms and concept families.