TheFreeDictionary.com Lookup is a Firefox add-on designed for quick and efficient word lookups directly from your web browser. This subscription-based tool allows users to highlight any word on a webpage and access its definition instantly. By right-clicking the highlighted word, a new tab opens with the definition from TheFreeDictionary.com, ensuring a seamless user experience as it focuses on the newly opened tab while retaining your original page.

This add-on enhances browsing by providing immediate access to a comprehensive dictionary without intrusive advertisements. Users can easily return to their previous reading once they have finished looking up a word, maintaining their workflow uninterrupted. TheFreeDictionary.com Lookup is a valuable resource for anyone needing quick definitions while navigating the web.