WordAI: AI Dictionary & Vocab

Look up any English word, slang term or idiom and get a clear explanation from AI, in English, Simplified Chinese or Traditional Chinese. Then ask follow-up questions until it clicks.

WordAI is a free AI dictionary and vocabulary builder. No ads. No subscriptions. No in-app purchases.

AN AI DICTIONARY THAT EXPLAINS
• Meanings in plain language, with example sentences, word forms, synonyms, collocations and etymology
• Slang, internet expressions, phrases and idioms, not just single words
• Misspelled a word? WordAI shows the one you meant
• Type in Chinese to find the English word

ASK AI ABOUT ANY WORD
• How is it used? What's the difference between "affect" and "effect"? Ask right on the word page.

35 EXAM WORD BOOKS
• SAT, PSAT, ACT, AP, IB, SSAT, ISEE, GED, LSAT, MCAT, GRE and GMAT
• TOEFL, IELTS, TOEIC, PTE and OET
• Cambridge KET, PET, FCE, CAE, CPE and BEC
• China's CET-4, CET-6, Gaokao and Kaoyan, and Taiwan's GSAT and GEPT

REVIEW WITH FLASHCARDS
• Ten-word rounds with instant feedback and pronunciation
• Words you master in every meaning move to your Learned list

YOUR OWN WORD LISTS
• Import words from a PDF, Excel, CSV, Markdown or text file, or paste a list
• Save words to your own word books and keep them in sync on iPhone and iPad

WORKS OFFLINE
• Download a 10,000- or 20,000-word dictionary, with audio for the 20,000-word pack, and look words up without a connection

CONNECT YOUR AI ASSISTANT
• Look up words and update your word books from AI assistants that support the WordAI connector

FREE AND OPEN
WordAI is free to use, with no ads or paid plans, and its vocabulary-learning core is open source.

AI explanations can contain mistakes; check anything important.

Exam names such as SAT, ACT, GRE, GMAT, TOEFL, TOEIC and IELTS are trademarks of their respective owners. WordAI is not affiliated with or endorsed by them.