SmartWord is a free Chrome add-on developed by Charles Warren that provides automatic explanations of English words based on difficulty. With this handy tool, you can easily enhance your vocabulary while browsing the web.

SmartWord seamlessly integrates with your Chrome browser, allowing you to effortlessly access word definitions without leaving the webpage you are on. Once installed, the add-on automatically identifies English words on the page and provides clear and concise explanations of their meanings. This feature is especially useful for non-native English speakers or anyone looking to expand their knowledge of the language.

The add-on categorizes words based on their difficulty level, making it easy to focus on specific areas of vocabulary improvement. Whether you're reading an article, studying online, or simply browsing the web, SmartWord offers an efficient way to understand unfamiliar words without interrupting your workflow.

In summary, SmartWord is a valuable tool for anyone looking to enhance their English vocabulary while using the Chrome browser. Its automatic word explanations based on difficulty provide a seamless learning experience, making it a useful add-on for language learners and enthusiasts alike.