Play with a word enough times and it stays

One set a week, twenty words a set — and a word only counts as learned once you've got it right in three different games. Recognising a word on a flashcard and spelling it out of your own head are not the same thing.

53 sets · 1070 words · 13.25 per Square · every one unlocked from day one

See the flashcards (9:16) → Everyday verbs → Letters A–Z & numbers →