Right Click Wiktionary is a lightweight Firefox add-on designed for quick dictionary lookups. Users can simply select text and right-click to access definitions directly from the English Wiktionary. This functionality streamlines the process of finding word meanings without navigating away from the current page. The add-on allows users to customize their language preferences, making it versatile for non-English speakers as well.

The add-on operates within the context menu, providing a user-friendly experience. It requires permissions for context menus and storage to enhance usability and allow for theme and language customization. Although this add-on is no longer actively maintained, users are encouraged to explore alternative options for dictionary lookups that are better supported and frequently updated.