Korean Dictionary
How to say "Brain Fart" in Korean
“Brain Fart” in Korean is 뇌절 (pronounced "noejeol").
뇌절
noejeol
Usage & Context
Abbreviation meaning a temporary brain malfunction or mental lapse. Used to describe moments of forgetfulness or stupidity.
Example Sentence
아, 뇌절했어.
Oh, I had a brain fart.
How to use 뇌절 naturally
Quick answer
The Korean word for “Brain Fart” is 뇌절, romanized as noejeol.
Usage tip
Use slang only with friends or people who already speak casually with you. It can sound rude in formal Korean.
Common mistake
Do not rely only on the English meaning. Read the Korean example sentence and notice the particles, word order, and politeness level around 뇌절.
Pronunciation Guide
"뇌" (noe) sounds like "no-eh," similar to "no" followed by a soft "eh" sound. "절" (jeol) sounds like "juh-l," rhyming with the "juh" in "judge" and ending with a soft "l" sound. The stress is fairly even on both syllables.
More Example Sentences
Forgetting something mid-sentence during a conversation.
아까 말하려던 게 뭐였지? 뇌절 왔네.
What was I trying to say earlier? I had a brain fart.
Experiencing a mental block during a test.
시험 보다가 갑자기 뇌절 와서 답을 못 썼어.
I had a brain fart during the exam and couldn't write the answer.
Making a silly mistake in an online game.
어제 게임하다가 뇌절해서 팀원들한테 욕먹었어.
I had a brain fart while playing a game yesterday and got yelled at by my teammates.
Cultural Context
"뇌절" is a relatively new slang term, popular among younger generations, especially in online communities and gaming. It's an abbreviation of "뇌정지" (noejeongji), meaning "brain stop" or "brain freeze," but "뇌절" implies a temporary, often silly, lapse rather than a complete shutdown. It's frequently used in K-pop fan culture when idols make funny, nonsensical comments or actions, or in K-dramas for comedic effect when a character is momentarily confused.
Editorial note
We flag slang like 뇌절 for register and audience, since Korean slang can shift quickly and may sound rude outside close friendships.
Reviewed by Min-jung Park, Korean Language Teacher. Updated May 31, 2026. See our editorial standards.
Common Phrases
뇌절 왔어.
I had a brain fart.
나 지금 뇌절 중.
I'm having a brain fart right now.
완전 뇌절이네.
That's a total brain fart.
Related Expressions
뇌정지
noejeongji
brain freeze, brain stop (original term)
멘붕
menbung
mental breakdown (short for 멘탈 붕괴)
깜빡하다
kkamppakada
to forget momentarily, to slip one's mind
정신줄 놓다
jeongsinjul nota
to lose one's mind, to zone out
More Slang Words
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