50 Japanese Interjections You Should Use: Part1

Yuka

I notice Japanese people use short sounds and words like えっ, ああ, and へえ all the time in conversation. What are these called and how do I use them?

Rei

Those are Japanese interjections — aizuchi and exclamations that make conversation flow naturally! Part 1 covers the most essential ones. Let’s go through them!

Interjections (感嘆詞 / かんたんし) are the short sounds and words that pepper natural Japanese conversation. Without them, Japanese can sound robotic. In Part 1, we cover the essential reactions — the building blocks of natural, flowing Japanese.

At a Glance: Essential Reaction Sounds

Showing You’re Listening: Aizuchi

相槌（あいづち） are the backchanneling sounds you make to show you’re listening. Japanese conversation relies heavily on these — silence while listening feels cold:

• うん、うん。— Mm-hmm, yeah. (I’m listening)
• そうか。— I see. (processing information)
• なるほど。— I see, that makes sense.
• そうですね。— That’s true / I agree.
• はい、はい。— Yes, yes. (I’m following)

Expressing Surprise and Interest

• えっ！本当に？— What! Really?
• へえ〜、知らなかった！— Oh wow, I didn’t know that!
• まじで？— Seriously? (very casual)
• そうなんだ！— Oh, is that so! (casual realization)
• うそ！— No way! / You’re kidding! (surprise)

Yuka

I’ve heard Japanese people say なるほど constantly. Is it always polite, or can it come across as dismissive?

Rei

Great point! なるほど is polite and sounds engaged. However, repeating it too many times to a senior can sound like you’re not truly listening. Mix it up with そうですね and はい for natural variety!

Hesitation and Thinking

• うーん、どうかな。— Hmm, I wonder…
• まあ、そうかな。— Well, I guess so.
• そうねえ… — Well, let me think…
• ちょっと待って。— Wait a moment / Let me think.
• なんと言えばいいかな。— How should I put it…

Calling Attention

• ねえ、聞いて。— Hey, listen.
• あのさ、— Hey, um… (about to say something)
• ちょっと！— Hey! / Excuse me! (can be impatient)
• ねえねえ！— Hey hey! (playful, grabbing attention)

Quick Quiz

1. ___！本当に？ (surprised) → えっ
2. ___、わかった。(I see / realization) → なるほど / ああ
3. ___、どうしようかな。(thinking/hesitating) → うーん
4. ___、聞いてほしいことがあって。(hey, attention) → ねえ

Summary

あわせて読みたい

50 Japanese Interjections You Should Use: Part2 I've been working on my aizuchi. What other interjections should I add to sound more natural in Japanese conversation? Great progress! Part 2 covers emotion-...

あわせて読みたい

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