Your Dynamic Thesaurus
Hey ! 👋 Drop a word, phrase, sentence, question or anything below. I'll figure out what you need — definition, translation, grammar fix, or speaking coaching.
AI language learning, made personal
DynaSaurus (词灵龙) is Kee Lee’s personalized AI language-learning web app. It adapts vocabulary explanations, translation, grammar feedback, and IELTS speaking practice to a learner’s CEFR level, first language, and interests.
Personalized explanations built around the learner’s level, first language, and interests.
Language and cross-cultural guidance designed to explain why an expression works.
Corrections that explain the issue instead of returning only a rewritten sentence.
Practice prompts and structured support for developing speaking answers.
RUA means Recognise, Understand, and Apply: identify a word's meaning, form, and pronunciation; understand its context, collocations, and connotations; then apply it through level-appropriate, cross-linguistic practice.
You can start without an account. The Free plan includes 5 lookups per day; an account is used for cloud history sync.