WordHub – AI Dictionary & Vocabulary Builder

Look up any word while browsing. Get definition, pronunciation, etymology, AI explanations, and spaced repetition — all in one tool.

WordHub is your AI-powered vocabulary learning companion for mastering English while browsing the web. 🎯 HOW IT WORKS Hover over any word → Press Alt+D → Get instant definitions, pronunciation (IPA), frequency data, and more. No tab switching, no interruptions. 📖 SMART WORD LOOKUP • Definitions from WordNet (world's largest English lexical database) • Word frequency rankings from SUBTLEX-US (51M word corpus) • Etymology trees and word family connections • Word roots, prefixes, and suffixes breakdown 🤖 AI-POWERED LEARNING • AI Explanations – Get context-aware insights for any word • Paragraph Translation – Hover over paragraphs to translate into your native language • AI Chat – Ask follow-up questions about any word or concept 📊 VOCABULARY MANAGEMENT • Save words with one click while reading • Spaced repetition (SM-2) for long-term retention • Daily quiz with definition, fill-in-the-blank, and spelling modes • Import/export word lists (Anki, CSV, plain text) 🔍 PAGE TOOLS • Page Scan – Highlight all difficult words on any webpage • Reading Mode – Clean, distraction-free article view • Word frequency analysis for any page 🌐 MULTILINGUAL SUPPORT • Interface available in English, 中文, 日本語, 한국어, Español, Français, Deutsch, and more • AI-powered translations in 20+ languages ✅ PRIVACY FIRST • No account required to start • Your vocabulary stays in your browser • Optional sync with free WordHub account • No ads, no tracking, no data selling PERFECT FOR: • GRE, TOEFL, IELTS, SAT test preparation • ESL/EFL learners at any level • Academic researchers and students • Business English professionals • Anyone who reads English online 🆓 FREE FEATURES All core features are free forever. Premium AI features use your own API key — no subscription required. KEYBOARD SHORTCUTS • Alt+D – Look up selected word • Alt+S – Save/unsave word • Alt+Shift+D – Toggle sidebar Built with ❤️ for language learners worldwide. Website: https://wordhub.top