Master English vocabulary through word roots and etymology.
Website | Word Roots | Vocabulary Lists | Learn
Wordiyo is a free English vocabulary learning platform that teaches words through their Latin and Greek roots.
Instead of rote memorization, every word is broken down into color-coded morphemes (prefix + root + suffix), revealing the logic behind word formation. Learn one root, understand dozens of related words.
Root: duct (to lead)
├── con + duct → conduct (lead together)
├── pro + duct → product (lead forward)
├── intro + duct → introduction (lead into)
└── de + duct → deduct (lead away)
Dictionary - 16,000+ words with bilingual definitions (EN/ZH), IPA pronunciation, TTS audio, collocations, and example sentences
Word Roots - 605 Latin & Greek roots with etymology, morpheme decomposition visualization, and Grimm's Law sound change patterns
Vocabulary Lists - Curated lists by exam (GRE, TOEFL, IELTS, SAT, CET-4/6), CEFR level (A1-C2), and frequency (NGSL, AWL)
Reading - Articles with inline vocabulary annotations, bilingual translation toggle, and side vocabulary panel
Personal Tracking - Google OAuth login, mastery tracking (4 levels), and personal vocabulary book
Bilingual - All content available in English + Chinese, with instant language switching
| Count | |
|---|---|
| Words | 16,000+ |
| Word Roots | 605 |
| Affixes | 163 |
| Example Sentences | 69,150 |
| Exam Tags | 10 (GRE, TOEFL, IELTS, SAT, CET-4/6, etc.) |
| Semantic Domains | 45+ |
- Framework: Next.js (App Router, SSR/ISR)
- Language: TypeScript (strict mode)
- Styling: Tailwind CSS with CSS variable design tokens
- Database: Supabase (PostgreSQL)
- Auth: Google OAuth via Supabase Auth
- Deployment: Vercel
- Fonts: Lora (headings) + Nunito (body)
pnpm install # Install dependencies
pnpm dev # Start dev server (port 3001)
pnpm build # Production build
pnpm type-check # TypeScript validation
pnpm lint # ESLintMIT License - see LICENSE for details.
- Website: wordiyo.com
- Contact: hello@wordiyo.com