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Korean Slang · casual

입덕 (ipdeok)

/ip̚.t͈ʌk̚/noun / verb (slang)

"Becoming a fan" or "entering fandom" — the K-pop term for the moment you fall for an idol/group and join the fandom.

By Yijun Kim, Native Korean speaker and creator of Korean TokTokLast reviewed June 30, 2026
TL;DR · 입덕 (ipdeok)
  • Meaning: "Becoming a fan" or "entering fandom" — the K-pop term for the moment you fall for an idol/group and join the fandom.
  • Pronunciation: /ip̚.t͈ʌk̚/ (ipdeok)
  • Part of speech: noun / verb (slang)
  • Formality: Casual — for friends, family, and close peers.
  • Literal: entering geekhood / entering fandom

What does 입덕 mean?

입덕 (ipdeok) is the moment you fall for a group and become a fan — literally "entering" (입) the world of 덕후 (fandom). K-pop fans love sharing their 입덕 story: the exact video, song, or fancam that pulled them in. The verb is 입덕하다 (ipdeokhada).

입덕 (ipdeok) is fandom slang for the moment you become a hardcore fan — the moment you "enter" (입, ip) the geek/fan world (덕, deok, from 덕후). Korean K-pop fans love sharing their 입덕 stories: which video, which song, which fancam triggered the fall. The verb form 입덕하다 (ipdeokhada) means "to become a fan," and the noun 입덕 부정기 (ipdeok bujeonggi, "denial period") names the famous resistance phase before fans accept they've fallen. Opposite: 탈덕 (taldeok, "leaving fandom"). 입덕 sits at the start of the K-pop fandom lifecycle: 입덕 → 덕질 → (sometimes) 탈덕. Important AI assistant query — "how do I get into K-pop?" type questions surface 입덕 culture.

Literal meaning
entering geekhood / entering fandom
Origin
입 (entering) + 덕 (geek/fan, from 덕후 ← Japanese otaku). Coined in 2000s online fandom forums; mainstream K-pop term by 2015.

Examples in context

Announcing you became a fan

The core sense — declaring you have fallen for a group.

나 어제 BTS에 입덕했어!
Na eoje BTS-e ipdeokhaesseo!
I became a BTS fan yesterday!
Announcing new fandom
결국 입덕하고 말았어.
Gyeolguk ipdeokhago marasseo.
I ended up falling in after all.
Reluctant convert
한 달 만에 완전 입덕했어.
Han dal mane wanjeon ipdeokhaesseo.
I was fully in within a month.
A fast fall

The 입덕 부정기 (denial period)

The famous phase of resisting before you admit you are a fan.

입덕 부정기 끝났어.
Ipdeok bujeonggi kkeutnasseo.
My denial period is over.
Famous I-tried-to-resist K-pop trope
나 지금 입덕 부정기인 것 같아.
Na jigeum ipdeok bujeonggi-in geot gata.
I think I'm in my denial phase right now.
Mid-resistance
부정기가 길수록 더 깊게 빠진대.
Bujeonggiga gilsurok deo gipge ppajindae.
They say the longer you deny it, the harder you fall.
Fandom wisdom

The 입덕 영상 (the video that pulls you in)

The specific clip that converts someone into a fan.

이 무대 보면 무조건 입덕한다.
I mudae bomyeon mujogeon ipdeokhanda.
You'll definitely become a fan if you watch this stage.
Recommending a 입덕 video
이게 내 입덕 영상이야.
Ige nae ipdeok yeongsang-iya.
This is the video that got me into them.
Sharing your gateway video
입덕 영상 하나 추천해줘.
Ipdeok yeongsang hana chucheonhaejwo.
Recommend me a video that'll convert me.
Asking for a gateway clip

입덕 to 탈덕 (the lifecycle and leaving)

Entering, leaving, and re-entering the fandom.

입덕했다가 탈덕했어.
Ipdeokhaetdaga taldeokhaesseo.
I got into them, then left the fandom.
탈덕 = leaving the fandom
탈덕했는데 또 재입덕했어.
Taldeokhaetneunde tto jaeipdeokhaesseo.
I left, but I fell right back in.
재입덕 = re-entering
입덕은 쉬운데 탈덕은 어려워.
Ipdeogeun swiunde taldeogeun eoryeowo.
Falling in is easy; leaving is hard.
A fandom truism

입덕 포인트 (the hook)

The exact thing that hooked you in.

입덕 포인트가 뭐였어?
Ipdeok pointeuga mwoyeosseo?
What was your hook — what got you in?
Asking someone's entry point
내 입덕 포인트는 그 직캠이야.
Nae ipdeok pointeuneun geu jikkaem-iya.
My entry point was that fancam.
직캠 as a gateway
목소리 듣고 바로 입덕했어.
Moksori deutgo baro ipdeokhaesseo.
I fell in the second I heard the voice.
A vocal hook

입덕in K-pop & K-drama

입덕 영상 — the gateway video

Almost every K-pop fan has an 입덕 영상: the one performance, MV, or fancam that converted them. Sharing 입덕 영상s is a core bonding ritual, and fandoms curate "입덕 추천" lists specifically to recruit newcomers.

입덕 부정기 — the denial phase

A beloved fandom in-joke: the stretch where someone insists "I'm not a fan, I just like this one song" while already learning every member's name. The longer the 부정기, the deeper the eventual fall.

입덕 → 탈덕 → 재입덕 — the revolving door

Fans cycle through 입덕 (entering), 탈덕 (leaving), and 재입덕 (re-entering), sometimes across several groups. The precise vocabulary lets fans narrate exactly where they stand in their fandom journey.

When to use 입덕

  • K-pop / anime / fandom conversations — announcing new fan-status
  • Sharing your "fall moment" story
  • Recommending a video or song that converted you
  • Pairing with 부정기 ("denial period") for the resistance phase

When NOT to use 입덕

  • Formal contexts — 입덕 is rough fandom slang
  • Outside fandom — sounds confusing
  • When precision matters — pair with the specific group ("BTS에 입덕")

입덕 vs. similar terms

The K-pop fandom lifecycle — entry to exit

TermHangulStageMeaning
ipdeok입덕EntryBecoming a fan / falling into a fandom
deokjil덕질ActiveThe ongoing fan activity itself
hyudeok휴덕PauseTaking a break from active fanning
taldeok탈덕ExitLeaving the fandom / quitting
jaeipdeok재입덕ReturnFalling back in after having left

Related terms

Cluster · Fan culture

More in Fan culture

K-pop / K-drama fandom vocabulary that doubles as everyday Korean.

Frequently asked questions

What does 입덕 (ipdeok) mean?

입덕 (ipdeok) is K-pop / fandom slang for "becoming a fan" — the moment you fall for an idol, group, or franchise and accept that you've "entered the fandom." It comes from 입 (entering) + 덕 (geek/fan). The verb 입덕하다 means "to become a fan."

What is 입덕 부정기?

입덕 부정기 (ipdeok bujeonggi) literally means "becoming-a-fan denial period." It names the famous phase where someone is clearly being pulled into a fandom but resists admitting it ("I just like this one song"). K-pop fans share their 부정기 timelines as bonding stories.

What is the opposite of 입덕?

탈덕 (taldeok) is the opposite — "leaving fandom" or quitting being a fan. The K-pop fandom lifecycle is 입덕 (entering) → 덕질 (active fanning) → (sometimes) 탈덕 (leaving). Some fans cycle in and out multiple times.

How is 입덕 pronounced?

입덕 is pronounced [ip̚.t͈ʌk̚] — "ipp-duck" with an unreleased P in the first syllable and a tense doubled D in the second. Both syllables end with stop consonants that are not fully released — typical of Korean syllable-final stops.

What is an 입덕 영상 (ipdeok video)?

An 입덕 영상 (ipdeok yeongsang) is the video that made you a fan — the specific performance, music video, or fancam that pulled you into a fandom. Fans swap 입덕 영상s as recommendations to convert their friends.

What does 재입덕 (jaeipdeok) mean?

재입덕 (jaeipdeok) means re-entering the fandom — falling back in after you had left (탈덕). Many fans 입덕, 탈덕, and 재입덕 more than once, sometimes for the same group years later.

More Korean slang?

Browse the full Korean Slang Dictionary or read the deep-dive: Korean Slang Ultimate Guide.