Wordbook
Get captions, define unknown words, add them to a dictionary
In plain words
Wordbook helps users learn from YouTube videos by providing captions, instant word definitions, and a personal dictionary. Users submit video links, click unknown words to see definitions, and save vocabulary to their wordbook. Designed for online learners, it consolidates resources into one tool to reduce distraction and eliminate the need for multiple open tabs while studying.
written from the facts on this page · September 2026
From the sources
Wordbook is the all-in-one solution that will help you learn on YouTube with no distractions. Bring us the link to your course, get captions, click on any word to get a definition, and save it to your personal wordbook. Kill the 20 Chrome tabs - get learning.
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