1word — Never get stuck on a word again

Select a word, get an AI-powered short definition, and see saved words highlighted across the web.

1Word – Instantly Explain Any Word You Highlight Never get stuck on a word again. 1Word is a lightweight, AI-powered browser extension that lets you highlight any word or phrase on any website and instantly see a clear, simple explanation without leaving the page. How it works Highlight any word or phrase Right-click or use the shortcut Get an instant AI-powered explanation No tabs. No searching. No interruptions. Why 1Word? If you’ve ever: Read the same word multiple times and still didn’t understand it Opened new tabs just to search definitions Forgotten meanings of words you’ve seen before 1Word solves that instantly. Key Features Instant word explanations Highlight a word and get a short, clear definition powered by AI. Smart, simple definitions No complex dictionary language, just explanations you actually understand. Works on any website Blogs, articles, documentation, PDFs, emails, anywhere you can select text. Learn as you browse Understand new words in context, exactly where you found them. Minimal and non-intrusive No clutter, no constant popups, only when you need it. Perfect for Developers reading technical documentation Students learning new vocabulary Professionals dealing with complex terminology Non-native English speakers Anyone who wants to read faster and understand more Use Cases Highlight a technical term like “procurement” and get a simple explanation Select a complex phrase in an article and understand it instantly Read faster without breaking your flow Why not just Google it? Because 1Word: Saves time with no tab switching Keeps you focused Gives short, relevant explanations instead of long articles Privacy-friendly No unnecessary tracking Only processes selected text when you request it Keywords (for discoverability) highlight word explain word when selected AI word definition define selected text instant word meaning browser extension dictionary AI vocabulary tool text highlight meaning inline word explanation Simple idea. Powerful impact. Stop breaking your reading flow. Start understanding instantly. Install 1Word and make every word clear.