Fast Wiktionary Lookup от ormpjed

When activated, this add-on appends a panel to the active webpage. When you double-click or double-tap any word on the page, it will be looked up on Wiktionary, and the results displayed in the panel. It doesn't get any faster than this.

Features:
- Choose which languages and sections are displayed.
- Automatically parses words that are not in their lemma form.
- Continue navigating Wiktionary within the panel.
- Minimize the panel by clicking on its header.
- Works on Android.

Caveats:
- Not expected to work for orthographies that do not use spaces.
- Styling and reliability may vary depending on the page visited.

GitHub repository: https://github.com/ormpjed/Fast-Wiktionary-Lookup