Japanese Transitive & Intransitive Verbs: The Complete Pair System

One of the most confusing aspects of Japanese grammar for intermediate learners is the distinction between transitive verbs (他動詞, tadōshi) and intransitive verbs (自動詞, jidōshi). Japanese doesn't signal this distinction with a single suffix the way some languages do — instead, it uses paired verbs that share the same kanji root but conjugate differently and take different particles.

Once you understand the system, a huge swathe of confusing Japanese becomes transparent. You'll know instinctively whether to write ドアを開けた or ドアが開いた — and why both are grammatically correct in different contexts. This guide covers the logic, the patterns, the most common pairs, and the grammar structures that depend on this distinction.

What "Transitive" and "Intransitive" Mean in Japanese

In English we sometimes use the same verb for both uses: "I opened the door" (transitive — I did it) and "The door opened" (intransitive — it happened). Japanese uses two different verbs for these two meanings, and the particle choice reflects which one you're using.

• Transitive (他動詞) — an agent acts ON an object. The object takes を.
• Intransitive (自動詞) — a subject undergoes a change of state by itself. The subject takes が.

Notice that in the transitive sentence, 彼女 is the agent and ドア is the object marked by を. In the intransitive sentence, ドア is the subject marked by が — there is no agent mentioned.

The Paired Verb System (対応動詞)

Japanese has dozens of verb pairs where the transitive and intransitive forms share a kanji root. Learning these as pairs is more efficient than learning each verb in isolation. The table below covers the 15 most common pairs you will encounter at N4–N2 level.

Patterns for Identifying Transitive/Intransitive Pairs

While there is no single rule that covers every pair, several patterns cover the majority of common verbs. Memorising these patterns lets you make educated guesses about unfamiliar pairs.

Pattern 1: ～える (transitive) vs ～う / ～く / ～る (intransitive)

The most productive pattern: if the transitive form ends in 〜える, the intransitive counterpart often ends in a consonant-stem verb (〜く, 〜む, 〜る etc.).

Pattern 2: ～asu (transitive) vs ～iru / ～eru (intransitive)

Verbs ending in 〜asu are nearly always transitive. Their intransitive partners end in 〜iru or 〜eru.

Pattern 3: ～す (transitive) vs ～れる (intransitive)

Verbs with no pair (irregular cases)

Some verbs are inherently transitive or intransitive with no natural counterpart in the other category. 食べる (to eat) is transitive but there is no paired intransitive form — you simply use different phrasing. Similarly, 行く (to go) is intransitive with no transitive pair. Learn these as exceptions rather than trying to find non-existent partners.

が vs を: Particles That Reveal Everything

The particle choice is the fastest signal in real text. Spot を before a verb and you know the verb is transitive. Spot が before a verb that could be either, and it is intransitive.

A common error is writing ×財布を落ちた — mixing the transitive particle を with an intransitive verb. Japanese native speakers find this immediately unnatural.

～てある vs ～ている: The Grammar That Depends on This Distinction

Two of the most important N3/N2 grammar structures rely entirely on the transitive/intransitive distinction: 〜てある and 〜ている in resultant-state usage.

〜てある (transitive + resultant state)

Used with transitive verbs. Emphasises that a state exists because someone intentionally created it. The agent is not mentioned but is implied. The object takes が (not を) because the focus shifts to the resultant state.

〜ている (intransitive + resultant state)

Used with intransitive verbs. Describes a state that resulted from a change, with no implication of a human agent.

The nuance difference matters in real life: 窓が開けてある implies someone opened it deliberately (perhaps for ventilation), while 窓が開いている is neutral — it could be an accident or just an observation.

Five Commonly Confused Pairs Explained

1. 出す (だす) vs 出る (でる)

出す is transitive: "to take something out, to submit, to produce." 出る is intransitive: "to come out, to leave, to appear." They share the kanji 出 but behave completely differently.

2. 入れる (いれる) vs 入る (はいる)

The readings are completely different despite the same kanji. 入れる (transitive) means to put something into somewhere; 入る (intransitive) means to enter.

3. 直す (なおす) vs 直る (なおる)

直す (transitive) means to fix or correct something. 直る (intransitive) means to be fixed or to heal on its own. This pair comes up often in conversations about repairs and health.

4. 見せる (みせる) vs 見える (みえる)

見せる (transitive) means "to show." 見える (intransitive) means "to be visible / can see." This is an -asu / -eru pair where both end in -eru — so the pattern is less clear, making it a classic test item.

5. 聞かせる (きかせる) vs 聞こえる (きこえる)

聞かせる (transitive) means "to let someone hear, to tell." 聞こえる (intransitive) means "to be audible / can hear." The 〜asu vs 〜oeru pattern is irregular here — this pair must be memorised.

Practice Sentences: Choose the Correct Verb

For each sentence, identify whether a transitive or intransitive verb is needed by looking at the particle used, then choose between the pair.

How to Study Transitive/Intransitive Pairs Efficiently

• Learn pairs together. Never add just one verb from a pair to your flashcard deck. Always add both with their respective particles shown in example sentences.
• Use SRS with sentence cards. A card like 「ドアを開けた」 on the front, translation on the back, is far more effective than a card showing just 開ける → open.
• Mark the particle on the card. Include を or が on each flashcard to reinforce the correct particle pattern automatically.
• Read Japanese text actively. Every time you see a verb, look for the particle before it. If you see を, you are looking at a transitive verb. If が, check whether it is a stative or intransitive usage.
• Drill 〜てある vs 〜ている. These two structures make the transitive/intransitive distinction functionally meaningful and they appear on every JLPT N3 and N2 test.