Quick Reference

Meaning & Definition

驚く (odoroku) captures that split-second jolt when reality defies expectation — the sharp intake of breath, the widened eyes, the mind racing to catch up. It is one of the most instinctive verbs in Japanese, used the moment surprise overtakes composure.

驚く is an intransitive verb, meaning the subject becomes surprised rather than causing surprise in another. When you hear unexpected news or witness something shocking, you 驚く — the experience happens to you. Its noun form is 驚き (odoroki), meaning surprise or amazement as a feeling or event: sono odoroki wa ōkikatta (the shock was immense). The phrase 驚くべき (odoroku beki) means “astonishing” or “remarkable” and frequently appears in written and formal speech: odoroku beki shinpo (astonishing progress). 驚くほど (odoroku hodo), literally “to the degree that one is surprised,” functions as an adverb meaning “surprisingly” or “to a remarkable extent”: odoroku hodo hayai (surprisingly fast). The verb conjugates as a standard godan (u-verb): odoroita (past), odoroite iru (currently startled/still in shock), odoroka nai (not surprised).

How to Use It

The most important distinction for learners is 驚く (odoroku) versus 驚かす (odorokasu). 驚く is intransitive: the person doing the verb is the one who ends up surprised. 驚かす is transitive: you make someone else surprised, often intentionally. Kanojo wa odoroita means “she was surprised,” while kare ga kanojo o odorokashita means “he surprised her.” Mixing these up is a common error. Also note that 驚く describes an involuntary reaction — it cannot mean “to enjoy a surprise” or “to plan to be surprised.” For intentional dramatic reactions, Japanese speakers often use びっくりする (bikkuri suru), which is more colloquial and appears far more often in casual speech than 驚く.

Kanji Breakdown

The kanji 驚 is built from 馬 (uma, horse) at the bottom and 敬 (kei, reverence/respect) on top. The image is of a horse that bolts or rears in sudden fright — a startled animal reacting before reason can intervene. This vivid picture of an alarmed horse has carried the meaning of sudden shock and astonishment for centuries, making 驚く one of the more memorable kanji compounds for learners to visualize.

Example Sentences

Cultural Context

In Japanese interpersonal communication, visibly expressing 驚き (odoroki) serves a social function beyond the emotion itself. Reacting with surprise — saying odoroita! or the more casual bikkuri shita! — signals to the speaker that their news was genuinely impactful and worth sharing. Failing to react with adequate surprise when someone shares exciting or unexpected information can read as indifference or disrespect, making 驚く a verb tied to the social choreography of conversation as much as to personal emotion.

The compound 驚異 (kyōi), written with the same 驚 kanji, means wonder or marvel, and appears in contexts ranging from scientific discoveries to natural phenomena. This overlap between surprise and awe in the kanji’s semantic range reflects how Japanese can position astonishment not just as shock but as a gateway to deeper appreciation — 驚くべき技術 (odoroku beki gijutsu) describes technology so advanced it inspires something closer to reverence than mere surprise.

In classical Japanese literature and poetry, unexpected events that produced 驚き were often used as emotional pivots in narrative — the moment a character’s assumptions shatter and the story turns. Modern manga and anime carry this tradition forward, using visual freeze-frames and exaggerated expressions to mark the precise instant of 驚く. The verb’s intransitive nature reinforces the convention: the character is struck by surprise, passive and undone for a moment, before the story resumes.

📚 Learn More