Pick a verb, produce the form. 2,766 real JLPT words, 22 forms, and the rule shown every single time — right or wrong.
Plus the form to make. The verb class is shown, so you always know what you are working with.
Romaji becomes kana as you type — kaite → かいて. No Japanese keyboard needed.
Every answer explains itself. Anything you miss comes back sooner until it sticks.
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| Form | Your answer |
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Total XP across every game on the site — kanji, kana, grammar, vocabulary, the lot.
A sample of real N5 words from the same set the drills use, one group per class. Notice 帰る and 食べる: both end in る, and they behave completely differently. That is the whole reason this trainer reads the verb class from dictionary data instead of guessing from the spelling.
| Word | Meaning | ます | ない | て | た |
|---|---|---|---|---|---|
| 会うあう | to meet, to see | 会います | 会わない | 会って | 会った |
| 開くあく | to open, to become open | 開きます | 開かない | 開いて | 開いた |
| 遊ぶあそぶ | to play; to spend time pleasantly; to hang out | 遊びます | 遊ばない | 遊んで | 遊んだ |
| 洗うあらう | to wash | 洗います | 洗わない | 洗って | 洗った |
| 青いあおい | blue | 青くない | 青くて | 青かった | |
| 赤いあかい | red | 赤くない | 赤くて | 赤かった | |
| 明るいあかるい | bright (in reference to personality or weather); cheerful | 明るくない | 明るくて | 明るかった | |
| 暖かいあたたかい | warm | 暖かくない | 暖かくて | 暖かかった | |
| 開けるあける | to open | 開けます | 開けない | 開けて | 開けた |
| 上げるあげる | to raise, to lift | 上げます | 上げない | 上げて | 上げた |
| 浴びるあびる | to bathe, to shower | 浴びます | 浴びない | 浴びて | 浴びた |
| 入れるいれる | to put in | 入れます | 入れない | 入れて | 入れた |
| 一緒するいっしょする | together | 一緒します | 一緒しない | 一緒して | 一緒した |
| 意味するいみする | meaning, significance | 意味します | 意味しない | 意味して | 意味した |
| 買い物するかいものする | shopping | 買い物します | 買い物しない | 買い物して | 買い物した |
| 結婚するけっこん (する)する | marriage | 結婚します | 結婚しない | 結婚して | 結婚した |
Japanese conjugation looks enormous and is actually small. There are two regular classes, two irregular verbs, and one adjective pattern. Everything else — polite, past, negative, potential, passive, causative, conditional — is a suffix applied to a base you already know how to find. Once the bases are automatic, the twenty-two forms stop being twenty-two things to memorise and become one thing applied twenty-two ways.
一段 (ichidan) verbs are the easy ones. Drop る and add the ending: 食べる → 食べない, 食べます, 食べて, 食べられる. Nothing else changes, ever.
五段 (godan) verbs move the final kana through the five vowel bases. 書く becomes 書かない, 書きます, 書ける, 書こう — か・き・く・け・こ, the か column of the kana chart. Every godan verb does this in its own row: 読む uses ま・み・む・め・も, 話す uses さ・し・す・せ・そ.
The trap is that you cannot tell the classes apart from the spelling. 帰る, 入る, 走る, 切る and 知る all end in る and are all godan. 食べる, 見る and 起きる end in る and are ichidan. There is no reliable rule — which is why this trainer takes the class from UniDic dictionary data for every one of its 2,766 words rather than inferring it, and why the wrong answers it offers you are usually the word conjugated as if it were the other class. That is the mistake you are actually at risk of making.
する and 来る. That is the complete list. する is everywhere because any noun marked as サ変可能 becomes a verb with it — 勉強する, 練習する, 電話する — so learning one pattern unlocks thousands of verbs. 来る is harder than it looks because the kanji never changes while the reading moves through こ, き and く: 来ない is こない, 来ます is きます, 来れば is くれば. This is why the reading is always shown alongside the answer here.
A few otherwise-regular verbs break one form each. 行く is godan but its て-form is 行って, not 行いて. ある is godan but its negative is simply ない. くださる, いらっしゃる, おっしゃる and なさる take い instead of り, which is where ください comes from. All of them are in the Irregular Gauntlet.
The て-form is the gateway to most of intermediate Japanese — requests, progressive, permission, prohibition, sequencing, and a long list of grammar patterns that all attach to it. It is also the form with the most sound changes: く→いて, ぐ→いで, む・ぶ・ぬ→んで, つ・る・う→って, す→して. Learners who are slow at て are slow at everything built on it, which is why it gets its own ladder here rather than being one form among many.
Short sessions, often. Conjugation is motor memory more than knowledge: you already understand the rule long before you can apply it at speed, and the gap between the two only closes with repetition under mild time pressure. Ten minutes daily beats an hour on Sunday. Use Review before anything else — it serves you only the forms you have already got wrong, which is where nearly all of your remaining gains are.
No. Type romaji and it converts as you go — kaite becomes かいて, tabemasen becomes たべません. If you do have a Japanese IME you can use it, and if you would rather not type at all, switch to multiple choice in the setup panel and tap instead.
Either the written form or the reading. For 書く in the て-form, both 書いて and かいて are accepted, as is the romaji kaite. You are being tested on the conjugation, not on whether you chose to write the kanji.
Twenty-two for verbs: ます, ません, ました, ませんでした, ましょう, ない, た, なかった, て, なくて, ている, たい, ながら, the masu-stem, potential, volitional, imperative, ば, たら, passive, causative and causative-passive. Adjectives have a ten-form set of their own including the adverbial and before-a-noun forms. Every form can be switched on or off individually.
From Nihoner's own vocabulary set — 2,766 verbs and adjectives, each tagged with the JLPT level at which it is normally introduced, each matched to its UniDic conjugation class. Nothing is invented and nothing is scraped.
Completely, and no account is needed. A free account saves your XP, day streak and spaced-repetition schedule across devices instead of keeping them in one browser's storage.
Each word-and-form pair sits in one of six boxes. Get it right and it moves up a box and comes back later; get it wrong and it drops to the bottom and comes back tomorrow. The intervals are 1, 2, 4, 8, 16 and 32 days. It is deliberately simple — the value is in reviewing the right items, not in the arithmetic.