Slob Dictionary is a desktop dictionary application built with GTK 4 and Libadwaita.
It is designed for exploring local dictionary collections through a single polished interface, even when the source material comes in very different formats. Rather than tying users to one dictionary ecosystem, it can work with SLOB files directly and convert many other formats when necessary. Definitions can contain rich HTML or Markdown content, making it suitable for everything from straightforward word lists to complex reference works.
This is free and open source software.
Key Features
- Fast simultaneous lookup across multiple dictionary files.
- Persistent lookup history for returning to earlier searches.
- Save favourite words and definitions with bookmarks.
- Integrates with GNOME Activities search.
- Supports custom slobdict URIs for external searches and direct lookups.
- Provides command-line lookup as an alternative to the graphical interface.
- Optional GNOME extension can look up selected text using Super+D or a four-finger gesture.
- Supports formats including Aard 2 SLOB, DICT.org, StarDict, ABBYY Lingvo DSL, FreeDict, WordNet, Yomichan, XDXF, Zim and CSV.
- Provides zoom controls, find-in-page and printing for rendered definitions.
- Follows the GNOME light or dark appearance automatically.
- Remote content access is disabled by default for privacy.
- Keyboard shortcuts are available for the main application functions.
Website: github.com/MuntashirAkon/SlobDict
Support:
Developer: Muntashir Al-Islam
License: GNU Affero General Public License v3.0

Slob Dictionary is written in Python. Learn Python with our recommended free books and free tutorials.
Related Software
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|---|---|
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| StarDict | Powerful features such as Glob-style pattern matching |
| charcoal | Command line dictionary that's an alternative to wudao-dict |
| cambd | Cambridge dictionary CLI app |
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| rdict | Offline CLI dictionary using data from wiktionary. |
| Lexi | Self-driven dictionary app |
| Kotoba | Japanese – English dictionary |
| GNOME Dictionary | Simple, clean, GUI DICT tool |
Read our verdict in the software roundup.
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