눈 깜짝할 사이에
nun kkamjjakal saie
in the blink of an eye
Phrase in 30 Seconds
Use this phrase to describe something that happened so fast you almost missed it, just like a blink.
- Means: In the blink of an eye / very quickly.
- Used in: Describing fast traffic, disappearing food, or time flying by.
- Don't confuse: With '눈을 감다' which means to close one's eyes (die).
Explanation at your level:
Signification
Describes something that happens extremely quickly, almost instantaneously.
Contexte culturel
The 'Pali-pali' (hurry-hurry) culture makes this idiom one of the most used in daily life. Koreans value speed in service, work, and even leisure. On the Korean internet, people use the slang '순삭' (Soon-sak), which is a contraction of '순식간에 삭제' (Deleted in an instant). It's the modern, slangy cousin of our idiom. In traditional Korean stories, Taoist wizards (Sinseon) were said to travel '눈 깜짝할 사이에' across thousands of miles using magic. This phrase is a staple in K-Dramas to describe sudden plot twists or the fleeting nature of a romantic moment.
Shorten it for speed
In casual speech, say '눈 깜짝할 새' (Nun kkam-jjak-hal sae). It sounds more native and fits the 'fast' theme!
Don't use for slow things
If something took 10 minutes, this idiom might sound sarcastic. Only use it for things that feel like seconds.
Signification
Describes something that happens extremely quickly, almost instantaneously.
Shorten it for speed
In casual speech, say '눈 깜짝할 새' (Nun kkam-jjak-hal sae). It sounds more native and fits the 'fast' theme!
Don't use for slow things
If something took 10 minutes, this idiom might sound sarcastic. Only use it for things that feel like seconds.
Pali-pali Context
Use this when praising a waiter or a delivery person for fast service; they will appreciate the compliment!
Pair with '지나가다'
The most common verb to use with this idiom is '지나가다' (to pass by). It's a perfect match for talking about time.
Teste-toi
Fill in the blank to complete the idiom.
시간이 눈 (______) 사이에 지나갔어요.
The correct form is '깜짝할', which comes from '깜짝하다' (to blink).
Which sentence uses the idiom correctly?
Choose the most natural sentence:
The idiom describes something happening instantly, like a thief disappearing. It cannot be used with '3 hours' or future plans.
Complete the dialogue using the idiom.
가: 벌써 숙제를 다 했어? 나: 응, 쉬워서 (____________________).
The context implies finishing a task quickly.
Match the situation to the feeling.
When would you say '눈 깜짝할 사이에'?
It is used when time feels like it passed very quickly.
🎉 Score : /4
Aides visuelles
Speed Idioms Comparison
Questions fréquentes
10 questionsNo, it's perfectly fine! It shows you have a good command of idiomatic Korean. Just use the formal ending: '눈 깜짝할 사이에 끝냈습니다.'
Yes, but '쏜살같이' or '번개처럼' are more common for objects moving fast. '눈 깜짝할 사이에' is better for the *result* (e.g., the car disappeared).
'깜짝' implies a sudden startle or a single sharp blink. '깜빡' is a softer blink or a flickering light. Both work in this idiom.
It's understandable, but '눈 깜짝할 사이' is the fixed idiom. Stick to '사이' for naturalness.
Yes, '순식간' (瞬息間) is the Hanja equivalent. It's more formal.
Tense your vocal cords and release the sound sharply. Don't let any air out (unaspirated).
Yes! '아이가 눈 깜짝할 사이에 컸어요' is a very common expression used by parents and grandparents.
Usually, yes, because it functions as an adverbial phrase of time. Without '에', it sounds incomplete in most sentences.
Constantly! It's a favorite for describing falling in love or time passing in songs.
Yes, like an accident or losing money. It emphasizes how sudden the misfortune was.
Expressions liées
순식간에
synonymIn an instant
쏜살같이
similarLike an arrow
어느새
similarBefore one knows it
눈 깜짝 안 하다
contrastTo not even bat an eye
번개처럼
similarLike lightning
Où l'utiliser
At a Restaurant
Friend A: 벌써 다 먹었어?
Friend B: 응, 너무 배고파서 눈 깜짝할 사이에 다 먹었어.
Office Work
Manager: 보고서 벌써 다 하셨어요?
Employee: 네, 눈 깜짝할 사이에 끝냈습니다.
Social Media
User 1: 콘서트 티켓 샀어?
User 2: 아니, 눈 깜짝할 사이에 매진됐어.
Dating
Person A: 우리 벌써 집에 가야 돼?
Person B: 응, 너랑 있으면 시간이 눈 깜짝할 사이에 가.
Commuting
Driver: 차가 왜 이렇게 없지?
Passenger: 그러게요. 눈 깜짝할 사이에 도착하겠어요.
Parenting
Grandmother: 아이가 벌써 걷네!
Mother: 네, 눈 깜짝할 사이에 커버렸어요.
Memorize It
Mnemonic
Think of the 'N' in 'Nun' (Eye) and 'N' in 'Now'—it happens right NOW, as fast as a blink!
Visual Association
Imagine a magician snapping their fingers and a rabbit disappearing. The moment your eye blinks during the snap, the rabbit is gone.
Rhyme
눈 깜짝! 시간은 뚝딱! (Nun kkam-jjak! Sigan-eun ttuk-ttak! - Blink! Time is done!)
Story
You are at a bus stop. You look down at your phone for one second to check a text. You blink once (눈 깜짝). When you look up, the bus is already pulling away. It happened '눈 깜짝할 사이에'.
Word Web
Défi
Try to use this phrase today when talking about how fast your lunch break went or how quickly you finished a task.
In Other Languages
In the blink of an eye
English often uses 'in' while Korean uses '사이' (between/interval).
あっという間に (Atto iu ma ni)
Japanese focuses on speech speed, Korean on visual reflex.
一眨眼 (Yī zhǎ yǎn)
Chinese often omits the 'interval' word, using just 'one blink'.
En un abrir y cerrar de ojos
Spanish is slightly more wordy but conveys the same speed.
En un clin d'œil
A wink is usually intentional, but here it represents unintentional speed.
Im Handumdrehen
Focuses on manual dexterity/ease rather than just time passing.
في لمح البصر (Fi lamh al-basar)
Focuses on the 'sight' or 'vision' rather than the eyelid movement.
Num piscar de olhos
Almost no difference in usage or nuance.
Easily Confused
Both involve eyes and closing them.
눈을 감다 is a long action or death; 눈 깜짝하다 is a quick blink.
Both start with '눈'.
눈에 띄다 means 'to stand out' or 'be noticeable'.
FAQ (10)
No, it's perfectly fine! It shows you have a good command of idiomatic Korean. Just use the formal ending: '눈 깜짝할 사이에 끝냈습니다.'
Yes, but '쏜살같이' or '번개처럼' are more common for objects moving fast. '눈 깜짝할 사이에' is better for the *result* (e.g., the car disappeared).
'깜짝' implies a sudden startle or a single sharp blink. '깜빡' is a softer blink or a flickering light. Both work in this idiom.
It's understandable, but '눈 깜짝할 사이' is the fixed idiom. Stick to '사이' for naturalness.
Yes, '순식간' (瞬息間) is the Hanja equivalent. It's more formal.
Tense your vocal cords and release the sound sharply. Don't let any air out (unaspirated).
Yes! '아이가 눈 깜짝할 사이에 컸어요' is a very common expression used by parents and grandparents.
Usually, yes, because it functions as an adverbial phrase of time. Without '에', it sounds incomplete in most sentences.
Constantly! It's a favorite for describing falling in love or time passing in songs.
Yes, like an accident or losing money. It emphasizes how sudden the misfortune was.
