Words Unknown is a Chrome add-on developed by Strajk that allows users to learn English while browsing the web. With this add-on, users can easily highlight words that they don't know yet and receive instant translations and definitions.

The main feature of Words Unknown is its ability to seamlessly integrate with the Chrome browser, making it effortless to use. Users can simply highlight any word on a webpage and a pop-up window will appear with the translation and definition of the word. This makes it convenient for users to expand their vocabulary and improve their English skills while they browse the internet.

Words Unknown is a free add-on that offers a range of benefits. It does not track user activity, ensuring privacy while using the add-on. Additionally, it is open-source, allowing users to customize and enhance the add-on according to their preferences.

If you're looking to learn English or improve your vocabulary while browsing the web, Words Unknown is a useful tool to have. Its seamless integration with the Chrome browser and its free and customizable nature make it a great choice for language learners.