How to Learn Vocabulary for the JLPT
Vocabulary runs through every part of the JLPT. It is tested directly, it decides whether you can follow the reading passages, and it is the first thing you need in listening. The number of words grows quickly at each level, so how you learn them matters as much as how many hours you put in. Here is a method that works from N5 to N1.
How vocabulary appears on the test
Vocabulary questions ask you to read kanji words, choose how a word is written, pick the word that fits a sentence, find a word with a similar meaning, and choose the sentence where a word is used correctly. That last type is a good reminder that knowing a word’s English translation is not enough. You need to know how it is used.
The JLPT doesn’t publish official word lists for the current test, so prep books and apps each use their own lists. They overlap heavily, so pick one well-regarded source for your level and stick with it rather than combining several.
Use spaced repetition, but keep it under control
Spaced repetition software (SRS), such as flashcard apps that schedule reviews for you, is one of the most efficient ways to remember words. It shows you a word just before you are likely to forget it, so each review counts. Two warnings:
- Limit new cards. Every new word creates reviews for weeks. Adding 50 words a day feels productive for a week, then the review pile becomes impossible. For most busy learners, 10 to 20 new words a day is plenty.
- Never skip reviews to add new words. If reviews pile up, stop adding new cards until you’ve caught up.
Make better flashcards
A card with just 確認 on the front and “confirmation” on the back is easy to make and easy to forget. Better cards include:
- The word in kanji and its reading: 確認（かくにん）.
- An example sentence, ideally from something you read: メールを確認してください。
- Common partners: which particle and verb go with it. 確認する, 確認が取れる.
- Audio, if your app supports it, so you learn the sound and the pitch, not just the spelling.
Test yourself in both directions for the words you most want to use, Japanese to English and English to Japanese. For passive words you only need to recognise, one direction is enough.
Learn words in context
Flashcards are for keeping words, not for meeting them. The words that stick best are the ones you met in something meaningful: a graded reader, an article, a drama, a conversation. When you find a useful word, add it with the sentence you found it in. When you see that word again in the wild, it reinforces the card far more than another review would.
Watch for the classic traps
| Trap | Example | What to do |
|---|---|---|
| Similar kanji | 待 and 持; 未 and 末 | Review look-alikes side by side and notice the part that differs. |
| Same reading, different word | 機会 and 機械 (both kikai) | Learn them as a pair with one example each. |
| Long and short vowels | おばさん and おばあさん | Say words aloud and check the reading when you add them. |
| Near-synonyms | 直す and 治す; 変化 and 変更 | Note what each one is used with, not just the meaning. |
A simple daily routine
- Reviews first (10 to 15 minutes). Clear your SRS reviews for the day.
- New words (5 minutes). Add a small number, ideally from your reading or lessons.
- Read or listen (10 minutes or more). Meet words in context, and collect the next day’s new words.
- Use some words. Write two or three sentences, or use new words in your next lesson.
For level-specific plans, see our guides to N5, N4 to N3, N2 and N1.
Turning passive words into active ones
You can recognise far more words than you can use, and that is normal. The JLPT mostly tests recognition, but words you have actually said out loud are the ones you recognise fastest under time pressure. Using new vocabulary in conversation with a tutor, who can correct the ones that come out slightly wrong, is one of the quickest ways to make words truly yours.