How to Read an EPUB in Another Language With a Contextual Dictionary

Reading a novel in another language becomes tiring when every unfamiliar word makes you leave the book. A contextual dictionary can reduce those interruptions: instead of looking up a word in isolation, you check what it means in the sentence you are reading.

This guide uses LexicAIze, the app I created. You can open a compatible EPUB or choose a book from the library, read with translation support, and look up words without leaving the page. The free reading sample has limits; reading the whole book requires a paid Premium subscription.

1. Choose an EPUB you can use

Start with a book you have the right to read in EPUB format. Don't assume that a file bought for a closed ecosystem can be imported: digital protection or the file's structure may prevent it. If you don't have a suitable EPUB, try a classic from the library first.

The difficulty of the text matters too. A novel close to your level will help you judge whether the assistance actually improves your reading. A demanding classic can be useful for trying the dictionary, but may not be the best first book for learning.

2. Open the reader and import the file

Go to LexicAIze. Open Library, choose My Books, and use the import option to select your EPUB. Once the book appears, open it in the reader.

In our test with a short demonstration EPUB, The Last Bus, importing worked in the web version and the text opened for reading. That confirms the process for this file, not compatibility with every EPUB. If yours does not open, check that it is a valid, unprotected EPUB. Do not convert it or remove usage restrictions unless you have the right to do so.

3. Choose your support language

Select the language in which you want help. Parallel translation can guide you without replacing the original text. Try reading a sentence before looking at the translation, checking only what stops you, then returning to the full sentence.

In the web test, the English sentence “Maya missed the last bus” appeared beside its Spanish translation. Context matters for missed: here it means she did not catch the bus, rather than that she felt sad about its absence.

4. Tap a word in the sentence

Tap a word you do not understand. LexicAIze shows an AI-assisted explanation based on the reading context. In our test with missed, the contextual definition and Spanish translation conveyed the sense of failing to catch the bus.

Automatic explanations can be wrong. If a meaning or synonym does not fit the sentence, check another source or the whole paragraph. The point of the lookup is to keep reading, not to memorize an answer without checking it.

5. Save only words worth reviewing

When a word matters to your reading, save it. In the same test session, missed later appeared in My Words. We did not test whether it persisted after closing the browser or synced between devices, so do not rely on this example as a permanent backup for your notes.

There is no need to save every new term. If you note words that recur or change the meaning of a passage, you will have a more manageable list when you return to the book.

Try the process with a sample

You can open the reader and try a compatible EPUB or a library book to see whether the dictionary helps you follow the story. The initial sample is limited and you do not need an account to begin; Premium lets you continue with the entire book. Check the current terms before subscribing.

After trying it, the useful question is not how many words you looked up, but this: could you return to the story without losing the thread?