Active Dictionary

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AI reading companion that explains passages and helps you reuse new vocabulary

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Active Dictionary

What it is

Active Dictionary is a language learning and reading tool that works alongside the material you are studying. You open a public text from its library or add your own articles, PDFs and captioned YouTube videos to a project. While reading, you can look up a word or ask the AI expert about a hard passage, getting a plain explanation and its meaning in context. Useful phrases can be saved to a personal dictionary with their source sentence, then practiced with an AI conversation partner or in writing tasks that suggest saved expressions. A browser extension and mobile app support saving and review. Public materials work without signing up.

Key features

In-context explanations of passages
Personal dictionary of saved expressions
AI conversation practice
Writing tasks using saved phrases

What we liked

+ Works with your own articles and videos
+ Public library usable without signup
+ Links reading directly to practice

Worth noting

· Published pricing and plan limits are unclear
· Language coverage is not fully listed

Editor's notes

More context from AI BirdView

Many vocabulary apps stop at definitions, but Active Dictionary is built around actually using the words you find. It keeps the explanation next to the original sentence, then brings saved expressions back into conversation and writing practice, so new language moves from recognition to active use.

Explains difficult words and passages in context right beside the text you are reading
Supports articles, PDFs and YouTube videos with captions, plus a public reading library
Saves expressions with the sentence they came from into a personal dictionary
Offers an AI conversation partner and writing tasks that draw on your saved phrases
Includes a browser extension for saving while browsing and a mobile app for review

Active Dictionary is best for intermediate and advanced learners who read real material for work, study or personal interest and want to expand their active vocabulary. A practical tip: add a document you already need to read, such as a report or a course paper, and save only a handful of truly useful expressions per session, so your practice stays focused and the review list stays manageable.