Vocabulary Builder & Study Modes
Build vocabulary lists with word, definition, example sentence, synonyms, and antonyms. Study with browse, flashcard, and match-game modes. Multi-format parser (pipe, comma, JSON), word validator + normalizer, synonym/antonym parser + deduper, auto difficulty marker (1-5), search filter, alphabetical sorter, Fisher-Yates randomizer, flashcard deck builder, match-game pair generator + validator, text/CSV/JSON renderers, copy + multi-download, history (localStorage), shareable URL, summary stats, word frequency analyzer, and 4 vocab presets (SAT, GRE, TOEFL, elementary). 100% client-side — no network.
Build vocabulary lists with word, definition, example sentence, synonyms, and antonyms. Study with browse, flashcard, and match-game modes. Multi-format parser (pipe, comma, JSON), word validator + normalizer, synonym/antonym parser + deduper, auto difficulty marker (1-5), search filter, alphabetical sorter, Fisher-Yates randomizer, flashcard deck builder, match-game pair generator + validator, text/CSV/JSON renderers, copy + multi-download, history (localStorage), shareable URL, summary stats, word frequency analyzer, and 4 vocab presets (SAT, GRE, TOEFL, elementary). 100% client-side — no network. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.