LESSON NOTES · レッスンノート

N5Lesson notes · Oct 2, 2026

Surprised in Japanese: びっくりした, 驚おどろいた and how people actually react

"I'm surprised" in Japanese is びっくりした in everyday speech and 驚おどろいた (おどろいた) in neutral or written Japanese — and both are normally in the past tense, even though you are surprised right now.

That past tense is the whole trick of this topic. English says "I am surprised" because surprise is a state. Japanese treats it as a moment that just happened to you: the surprise occurred, so it is びっくりした. Once that clicks, the rest is choosing the right register and the right reaction sound.

The basics

What is the everyday way to say "surprised"?

びっくりする (to be surprised) is the everyday verb, and in conversation you will almost always say びっくりした. It works with friends, coworkers, and shop staff, and it is soft enough that it never sounds rude. Add です to make it polite: びっくりしました.

びっくりした! — I'm surprised! / That surprised me! (casual, instant reaction) びっくりしました。 — I was surprised. (polite, to a teacher or client) あー、びっくりした。 — Whew, that startled me. (casual, said after a small scare is over)

That last one matters. びっくりした covers both "what a surprise!" and "you startled me." For the second meaning, see how it differs from 怖こわい: びっくり is the jolt, 怖こわい is the fear that can follow it.

What is 驚おどろく, and how is it different from びっくりする?

驚おどろく (おどろく) means the same thing but sounds more neutral and a little more serious. It is the verb you read in news, essays, and novels, and hear in careful speech.

その結果けっかには驚おどろきました。 — I was surprised by that result. (polite, formal-ish, a presentation or meeting) 世界中せかいじゅうが驚おどろいた。 — The whole world was surprised. (neutral, news-style)

びっくり is the spoken word and 驚おどろく is the written one, roughly like "freaked out" versus "was astonished" in English, except that びっくり is nowhere near as slangy as "freaked out." Neither is wrong in either place. Choose びっくり for talking and 驚おどろく for writing a report or an email.

Word Feel Where you'll meet it
びっくりする Everyday, warm Conversation, texts, anime
驚おどろく Neutral, a bit formal News, writing, speeches
驚おどろき (noun) Neutral 驚おどろきの結果けっか "a surprising result"
意外いがい "Unexpected" Opinions about expectations
サプライズ A planned surprise Parties, gifts, proposals

Why do you say びっくりした and not "びっくりしている"?

Because the surprise is an event that already happened. The past tense is the natural way to report a feeling that just hit you. If you say びっくりしている, it sounds like you are describing a continuing state, and often that is odd in a conversation: the listener hears "I am in the middle of being surprised" rather than "wow!"

びっくりした! — I'm surprised! (the natural reaction, right after the thing happens) え、そうなんですか。驚おどろきました。 — Oh, is that so? I'm surprised. (polite, reacting to news)

The ている form does have a place: when the surprise lasts, or when you describe someone else's ongoing reaction.

みんな驚おどろいている。 — Everyone is surprised. (neutral, describing a state of many people) まだ驚おどろいていて、何なにも言いえません。 — I'm still shocked and can't say anything. (the surprise is continuing)

If you want a quick refresher on why Japanese uses た for something that feels "present" to an English speaker, our past tense guide covers the logic.

How do you say what surprised you? (に and て)

Mark the cause with に: 〜にびっくりする or 〜に驚おどろく. The particle に points at the thing that triggered the reaction.

値段ねだんにびっくりした。 — I was surprised at the price. (casual) 彼かれの速はやさに驚おどろきました。 — I was surprised by his speed. (polite)

You can also connect a clause with the te-form: 〜てびっくりした, "I was surprised to ...".

ドアを開あけたら、全員ぜんいんがいてびっくりした。 — When I opened the door, everybody was there and I was surprised. (casual, telling a story)

A common beginner error is to use を or が for the cause, like 値段ねだんをびっくりした. Do not. びっくりする is not something you do to the price; the price acts on you, so it takes に.

Beyond the basics

What do people say before they say びっくりした?

Most of the time, the first reaction is not a sentence at all. It is a short sound or word. Real surprise comes out as えっ (a sharp intake), and then something else.

えっ? — Huh? / What? (casual, a sharp reaction to news) うそ! — No way! / You're kidding! (casual, literally "a lie") まじで? — Seriously? (casual, slangy, between friends) 本当ほんとうですか。 — Is that true? (polite, to a boss or a stranger)

うそ is not an accusation in this use. Nobody thinks you are lying; it is a pure reaction, like "no way!" In a reply to good news, うそ! is warm and happy. For the longer story of how the "really?" family works, see 本当ほんとうに. And because these first sounds are so short, they overlap with filler words: えっ, あっ, えー are how you buy half a second while your brain catches up.

What is the difference between びっくり and 意外いがい?

びっくり is your reaction. 意外いがい (いがい) is your comment on how reality differed from what you expected. 意外いがい means "unexpected" and works like a judgement, not a jolt.

意外いがいと難むずかしいですね。 — It's harder than I expected. (polite, mild surprise, no shock) この店みせ、意外いがいと安やすいね。 — This place is cheaper than I thought. (casual) 意外いがいだった。 — That was unexpected. (neutral, a calm verdict)

You could say びっくりした for the shop being cheap, but 意外いがいと would be more natural when your reaction is quiet, closer to "huh, I didn't expect that" than to a startle.

What is サプライズ? Is it the same as びっくり?

サプライズ is the loanword for a planned surprise, one that somebody set up for you. Natural in Japanese: サプライズパーティー, サプライズプレゼント, サプライズ登場とうじょう.

サプライズパーティーを準備じゅんびしています。 — We are preparing a surprise party. (polite, planning) これはサプライズだよ。 — This is a surprise. (casual, handing someone a gift)

If you tell a friend "I was surprised" about a bad event, you use びっくりした. サプライズ is not the word for any sudden thing, only for the happy, planned kind. That mismatch is the most common loanword confusion.

How do you surprise someone else? (驚おどろかせる)

驚おどろかせる (おどろかせる) and びっくりさせる mean "to surprise (someone)". They are the causative form: you make a person surprised. That is exactly what the causative is for, and if the idea is new to you, our causative form guide explains it.

びっくりさせないでよ。 — Don't scare me! / Don't surprise me like that! (casual, said right after a jump scare) みんなを驚おどろかせたい。 — I want to surprise everyone. (casual, a plan) 驚おどろかせてごめんね。 — Sorry for surprising you. (casual, soft)

Notice the contrast: びっくりさせないでよ is mild, closer to "you startled me," and is a complaint with no real anger.

What are ドキッ and ギョッ? Aren't they just びっくり?

They are sound-symbol words (onomatopoeia) for a physical jolt, and each has its own flavor. ドキッとする is the heart skipping a beat. ギョッとする is a "whoa" shock, usually unpleasant.

急きゅうに名前なまえを呼よばれて、ドキッとした。 — My name was suddenly called and my heart jumped. (casual, a small startle or nerves) 虫むしを見みてギョッとした。 — I saw a bug and recoiled. (casual, disgusted shock)

ドキッ can also be romantic: a surprising smile can make you ドキッとする. ギョッ is never romantic. If this kind of word is new to you, our onomatopoeia guide has the full system.

How does surprise sound in anime?

Anime pulls surprise to the maximum: elongated vowels, glottal stops, and fixed phrases you almost never hear in daily life.

なにっ!? — What?! (dramatic, villain or rival discovering something) ええええ!? — Eeeeh?! (loud, comedic shock) ばかな…! — Impossible...! (dramatic, written-style disbelief) うそでしょ? — You're kidding, right? (casual, very common in dialogue)

In real life, people mostly say えっ?, まじで?, and うそ! in a much quieter voice. なにっ!? in an office would get a very strange look. It is a stage voice, not a speaking voice, but it is excellent for recognizing the emotion in a scene.

What is the noun, おどろき?

おどろき (驚おどろき) is the noun, and it often appears in set phrases about the quality of a thing: a surprising result, a surprising story.

驚おどろきの結果けっかでした。 — It was a surprising result. (polite, written, headline style) 驚おどろきを隠かくせない。 — I can't hide my surprise. (neutral, written style) 驚おどろくほど安やすい。 — Surprisingly cheap. (casual, "cheap to the point of surprise")

Common mistakes

  • Saying びっくりしている for the instant reaction. Use びっくりした. ている is for a lasting state.
  • Marking the cause with を. It is 値段ねだんにびっくりした, not 値段ねだんをびっくりした.
  • Using サプライズ for any unexpected thing. It means a planned surprise. A sudden shock is びっくり.
  • Using 驚おどろいた in casual chat when you want a warm reaction. It is fine, but びっくりした sounds more natural with friends.
  • Taking うそ! literally. It is a reaction, not an accusation, so answer with はい、本当ほんとうです or ほんとだよ, not an apology.

Practice

Build each answer before opening it. Questions 3 and 4 are a pair: the same surprise, two different registers.

1. You just opened a door and someone jumped out. Say "I'm surprised!" naturally.

Show answer

びっくりした! — the surprise already happened, so Japanese uses the past tense.

2. Why is びっくりしている usually odd as an instant reaction?

Show answer

It describes a continuing state. A sudden reaction is an event, so it takes た: びっくりした.

3. In casual speech with a friend, say "I was surprised at the price."

Show answer

値段ねだんにびっくりした — the cause takes に, and びっくり is the warm everyday word.

4. In a polite report, say "I was surprised by that result."

Show answer

その結果けっかには驚おどろきました — 驚おどろく is more neutral and written. This is the pair to question 3: the same に pattern in a higher register.

5. Which particle marks the cause: 値段ねだん( )びっくりした?

Show answer

に — the price triggers the reaction in you, so it is the cause marked by に, not an object marked by を.

6. A friend tells you great news. Give a casual "No way!" and a polite "Is that true?"

Show answer

うそ! / 本当ほんとうですか。 — うそ is a casual reaction (not an accusation); 本当ほんとうですか is the polite version for a boss or a stranger.

7. You want to say "It's cheaper than I expected" with only mild surprise. Which word fits best?

Show answer

意外いがいと安やすい — 意外いがい comments on a gap from expectations; びっくり is a bigger, more physical jolt.

8. You planned a birthday party that your friend does not know about. What do you call it?

Show answer

サプライズパーティー — サプライズ is only for a planned surprise.

9. After a jump scare, tell your friend "Don't scare me!"

Show answer

びっくりさせないでよ — the causative びっくりさせる means "to make someone surprised", and ないで asks them not to.

10. Which is the unpleasant shock and which is the heart-skip: ギョッとする or ドキッとする?

Show answer

ギョッ is the unpleasant shock; ドキッ is the heart-skip. ドキッ can be nerves or romantic, while ギョッ is never romantic.

During a trial lesson, react to surprising news with びっくりした and then restate it in neutral Japanese with 驚おどろいた.

FAQ

Is びっくり rude to say to a boss? No. びっくりしました is polite enough for most situations. If you want a more formal or written feel, switch to 驚おどろきました.

Can I say 私わたしは驚おどろいている for "I am surprised"? It is grammatical and you will see it in news or essays, but in conversation it sounds stiff. びっくりした or 驚おどろきました is the natural choice.

What is the difference between びっくりする and 驚おどろく? びっくりする is the everyday spoken word; 驚おどろく is neutral and more written. They mean the same thing.

Is うそ! rude? No. In this use it is a reaction like "no way!" and it is very common between friends. To a boss, use 本当ほんとうですか or そうなんですか.

Is サプライズ the same as びっくり? No. サプライズ is a planned surprise such as a party or a gift. びっくり is the reaction of being surprised.

How do I say "That's surprising" about a fact? Use 意外いがい or 驚おどろきの: 意外いがいですね, "that's unexpected," or 驚おどろきの結果けっか, "a surprising result."

Vocabulary from this article

Tap the block to select all of it, then copy. In Anki: File → Import, note type Basic, separator Tab.

びっくりする	びっくりする — to be surprised (everyday)
驚く	おどろく — to be surprised (neutral, written)
驚き	おどろき — surprise (noun)
驚かせる	おどろかせる — to surprise (someone)
びっくりさせる	びっくりさせる — to surprise (someone), to startle
意外	いがい — unexpected
サプライズ	サプライズ — a planned surprise
うそ	うそ — no way! (lit. a lie)
まじで	まじで — seriously? (slang)
ドキッとする	ドキッとする — to have your heart skip
ギョッとする	ギョッとする — to be shocked, to recoil
結果	けっか — result
値段	ねだん — price

I'm Yuuki, a Japanese teacher based in Tokyo. I've taught on italki as a Top 1% teacher and watched over 1,500 anime, so most of the example sentences on this blog come from lines I've actually heard in anime and everyday conversation, including every reaction word in this article. For practice with feedback, Book a trial lesson · $13, or work through Japanese practice exercises first.

Sources: the author's own lessons and standard reference grammars.

More drills like the ones above, plus a timed JLPT-style mock test: Practice · N5 · Read something at this level: JLPT N5 stories with audio

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