Word Koala: Instant Synonyms & Meanings

Understand every word you read. Learn faster. Improve vocabulary.

🌟 Learn English Faster While You Browse Word Koala instantly shows simpler synonyms, easy definitions, and word difficulty hints on any website. It also shows synonyms above the words instantly, so you understand difficult vocabulary at a glance. 🧠 What You Get • 🔍 Smart synonyms above the words as you read • ✏️ Simple, beginner-friendly definitions • 📊 Word difficulty (Zipf frequency scale) • 📘 Highlights for rare and advanced words • 🧠 Learn vocabulary naturally while browsing anything online 📚 Perfect For • English learners (A2–C1) • ESL students and teachers • Book readers and self-learners • Test prep (IELTS, TOEFL, SAT) • Anyone who wants to understand every word online 🚀 Why People Love It • ⚡ Lightweight — no slowdown • 🛡️ Privacy-friendly — runs locally • 🌐 Works on all websites • 🎯 Clean, distraction-free UI • 🖱️ Click for more detail when you need it • 🙌 Zero friction — just read and learn 🦘 Why “Koala”? Calm, friendly, and always there when a difficult word appears. Word Koala guides you quietly, helping you grow your vocabulary naturally. 🔒 Privacy First • No tracking • No ads • No data sent anywhere Your reading stays on your device.