What frequency levels mean
Words are grouped by how often they appear in ordinary English, and that ordering matters more than it sounds. The first thousand words account for a very large share of everything written or spoken; the second thousand adds far less; by the time you reach genuinely rare words, each one buys you almost no additional coverage of a normal text.
The practical consequence is that where you sit on the scale tells you what to study next. Gaps in the common levels are worth filling immediately because they appear constantly; gaps at the rare end can safely wait, and are better learned from reading than from lists.
Level mode and adaptive mode
In level mode you pick a band and answer ten questions from it, which is the right choice when you already know roughly where you are and want to work on a specific range. Every wrong answer shows the correct meaning, so a round doubles as a short study session rather than only a score.
Adaptive mode starts in the middle and moves. A correct answer sends the next question up a level, a wrong one sends it down, and after twelve questions it reports where you settled. This is the same principle behind computer-adaptive language exams: it finds your boundary in far fewer questions than testing every level would take, because it stops asking things you clearly know or clearly do not.
Turning a result into study
- Note the words you missed rather than the score. Three or four specific gaps are actionable; a number is not.
- Look each one up in a sentence, not a definition alone. Words are learned by the company they keep.
- Retake the same level a day later. If the same words go wrong again, they need a different approach, not another attempt.
- Do not chase the rare levels. Solid coverage of the common bands is worth more in real reading than a handful of unusual words.
- Use adaptive mode once a fortnight rather than daily. It measures a boundary that moves slowly.
Frequently asked questions
Which level should I start with?
If unsure, run Adaptive mode once — it converges on your level in 12 questions. Then drill the level it reports until you score 9–10, and move up.
Do wrong answers show the correct meaning?
Yes — the correct option is highlighted after every answer, so each round doubles as a mini vocabulary lesson.
Are the meanings shown in my language?
On the English page meanings are short English definitions; on the Korean and Spanish pages they are translations — ideal for learners.
How many new words a day is realistic?
For lasting learning, 5–20 new words a day is the sustainable range for most people — beyond that, forgetting tends to outpace learning. A better daily target is mixed: a handful of new words plus quick review of older ones. One or two 10-question rounds here each day fits that pattern nicely.
What is spaced repetition, and how do I use it with this quiz?
Spaced repetition means reviewing material at growing intervals — a day, then a few days, then weeks — timed to just before you'd forget it. It's one of the best-documented techniques in learning research. With this quiz, simply replay the same level on that schedule: missed words resurface, and each successful recall strengthens them.
Is quizzing myself really better than rereading word lists?
Yes — memory research consistently finds that retrieval practice (pulling an answer from memory) beats passive rereading, an advantage known as the testing effect. Even wrong answers help, because the immediate correct-meaning feedback arrives exactly when your brain is most receptive. That's why this quiz corrects you on the spot.