I.O.I - Suddenly Lyrics (Hangul / Romanized / English Translation) & Vocabulary Notes
I.O.I - Suddenly
🎵 Album: I.O.I 3rd MINI ALBUM (I.O.I : LOOP) - EP | 📅 Release: 2026-05-19
🇰🇷 Hangul
🗣️ Romanization
💬 English Translation
📚 Vocab Notes
🎬 Official Music Video / Audio Player — Press play to listen while learning the lyrics below!
About the Song
"Suddenly (갑자기)" delves into the relatable ache of post-breakup insomnia. Expressing how hard it is to let go of someone who once understood you completely, the lyrics trace an emotional sleepless night where distant memories come rushing back like starlight.
[Verse 1]
어쩌면 잘된 일이야
Eojjeomyeon jaldoen iriya
Maybe it was for the best
빨간 노을빛처럼
Ppalgan noeulbitcheoreom
Just like the crimson glow of the sunset
예쁜 널 보내야 했던 그때가
Yeoppeun neol bonaeya haetdeon geuttaega
That moment when I had to let your beautiful self go
머나먼 희미한 기억
Meonameon huimihan gieok
A distant, fading memory
이젠 내 맘속 널 지워야 하나
Ijen nae mamsok neol jiwoya hana
Must I erase you from inside my heart now?
📚 Verse 1 Vocabulary & Notes:
- 어쩌면 (Eojjeomyeon): Maybe, perhaps — Expresses hesitant resignation or self-comfort.
- 노을빛 (Noeulbit): Sunset glow / twilight light — Used metaphorically to symbolize both warmth and parting.
- 희미한 (Huimihan): Faint, dim, hazy — Modifies '기억' (memory) to convey time fading the past.
- 지우다 (Jiuda): To erase, wipe away — "널 지워야 하나" means "Should I erase you?".
[Chorus]
자려고 누웠는데 갑자기
Jaryeogo nuwonneunde gapjagi
I lay down to sleep, but all of a sudden
너에 대한 생각에 잠겨
Neoe daehan saenggage jamgyeo
I become immersed in thoughts of you
In the midnight 별처럼 감정들이 쏟아져
In the midnight byeolcheoreom gamjeongdeuri ssodajyeo
In the midnight, emotions pour down like stars
Ooh 갑자기 너에 대한 그리움에 사무쳐
Ooh gapjagi neoe daehan geuriume samuchyeo
Ooh, suddenly I'm overcome by an intense longing for you
Till the morning
Till the morning
그렇게 아침이 밝아오네
Geureoke achimi balgaone
And just like that, the morning dawns
잊으려 누웠는데
Ijeuryeo nuwonneunde
Even though I only lay down to forget
📚 Chorus Vocabulary & Notes:
- 갑자기 (Gapjagi): Suddenly, all of a sudden — The central theme of unexpected emotional waves.
- 생각에 잠기다 (Saenggage jamgida): To be lost/deep in thought, immersed in reflection.
- 쏟아지다 (Ssodajida): To pour out, cascade down — Vividly depicts emotions overflowing uncontrollably.
- 사무치다 (Samuchida): To pierce deeply, to be overwhelmed by grief/longing — An intensely poetic verb expressing heart-piercing yearning.
[Verse 2]
막혀 있는 도로 위
Makyeo inneun doro wi
On top of the congested road
수많은 차 중 하나
Sumanheun cha jung hana
Just one of the countless cars
내 마음 알아주던 너는 어디 있을까
Nae maeum arajudeon neoneun eodi isseulkka
Where are you, the one who truly understood my heart?
머나먼 희미한 기억
Meonameon huimihan gieok
A distant, fading memory
이젠 내 맘속 널 지워야 하나
Ijen nae mamsok neol jiwoya hana
Must I erase you from inside my heart now?
📚 Verse 2 Vocabulary & Notes:
- 막히다 (Mak-hida): To be blocked, congested (e.g., traffic jam) — Reflects a sense of feeling stuck and isolated in the crowd.
- 알아주다 (Arajuda): To acknowledge, understand, empathize with someone's feelings.
- 수많은 (Sumanheun): Innumerable, countless.
[Chorus]
자려고 누웠는데 갑자기
Jaryeogo nuwonneunde gapjagi
I lay down to sleep, but all of a sudden
너에 대한 생각에 잠겨
Neoe daehan saenggage jamgyeo
I become immersed in thoughts of you
In the midnight 별처럼 감정들이 쏟아져
In the midnight byeolcheoreom gamjeongdeuri ssodajyeo
In the midnight, emotions pour down like stars
Ooh 갑자기 너에 대한 그리움에 사무쳐
Ooh gapjagi neoe daehan geuriume samuchyeo
Ooh, suddenly I'm overcome by an intense longing for you
Till the morning
Till the morning
그렇게 아침이 밝아오네
Geureoke achimi balgaone
And just like that, the morning dawns
잊은 줄 알았는데
Ijeun jul aranneunde
When I honestly thought I had forgotten you
📚 Chorus Nuance Notes:
- -(으)ㄴ 줄 알았다 (-(eu)n jul aratda): Grammar pattern meaning 'thought that [something was the case]'. "잊은 줄 알았는데" highlights the painful realization that you haven't actually moved on.
[Bridge]
아무리 애써도
Amuri aesseodo
No matter how hard I struggle
괜찮은 척해 봐도
Gwaenchaneun cheokhae bwado
No matter how much I pretend to be okay
잊을 만하면 또 드리워지는 기억
Ijeul manhamyeon tto deuriwojineun gieok
Just when I'm about to forget, memories cast their shadow once again
우리 추억들
Uri chueokdeul
All of our cherished memories
자꾸만 아른아른거리잖아
Jakkuman areun-areungeorijana
Keep shimmering and flickering before my eyes
📚 Bridge Vocabulary & Notes:
- 애쓰다 (Aesseuda): To strive, try hard, make a desperate effort.
- -척하다 (-Cheokhada): Grammar pattern meaning 'to pretend to / act as if'.
- 드리워지다 (Deuriwojida): To hang over, cast over (like shadows or mist).
- 아른아른거리다 (Areun-areungeorida): Mimetic expression describing faint or translucent images flickering and floating in front of one's eyes.
[Outro]
Lalala lalala lalalala lala
Lalala lalala lalalala lala
Lalala lalala lalalala lala
Lalala lalala lalalala lala
Ooh lalala lalala lalalala lala
Ooh lalala lalala lalalala lala
Lalala lalala lalalala lala
Lalala lalala lalalala lala
너 뭔데 갑자기
Neo mwonde gapjagi
Who do you think you are, coming back into my mind all of a sudden?
📚 Outro Vocabulary & Notes:
- 너 뭔데 (Neo mwonde): Informal colloquial phrasing meaning "Who are you to...?" or "What gives you the right?" — Conveys bitter emotional exasperation at the memory of an ex barging uninvited into one's thoughts.
