Saving words while you read
Look up a word in the reader and tap "Add to study list" to save it for later.
Overview
You don't need to leave the page to build a vocabulary list. When you look up a word, saving it is one tap.
How to save a word
Double-click a word on desktop, or long-press it on mobile. That opens the lookup popup with the word's meaning. Inside that popup is an "Add to study list" button. Tap it, and the word is saved.
Root form, not the exact spelling you tapped
Words save by their dictionary form, not the exact inflected form you tapped. If you look up "hablando", "hablé", and "hablaré" on different days, they all save as "hablar". You end up with one entry, not three.
Conjugated verbs get an extra option
If you're reading a language with verb curriculum support and you look up a conjugated verb form, the popup also tells you which tense and person it is. Next to that is a "Practice this" button. That's separate from saving to your word list: it queues the form into verb drills instead, so you can practice conjugating it directly.
Where saved words go
Every word you save lands in Vocab, the app's saved-words screen. That's where review happens. For how review actually works, see Reviewing saved words.