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Korean Slang · formal

감사합니다 (gamsahamnida)

/kam.sa.ɦam.ni.da/verb (formal speech level)

"Thank you" in formal Korean — the safest, most universally appropriate way to express gratitude.

By Yijun Kim, Native Korean speaker and creator of Korean TokTokLast reviewed June 30, 2026
TL;DR · 감사합니다 (gamsahamnida)
  • Meaning: "Thank you" in formal Korean — the safest, most universally appropriate way to express gratitude.
  • Pronunciation: /kam.sa.ɦam.ni.da/ (gamsahamnida)
  • Part of speech: verb (formal speech level)
  • Formality: Formal — safe in business, service, and unfamiliar settings.
  • Literal: I do gratitude / I thank

What does 감사합니다 mean?

Gamsahamnida (감사합니다) is the formal, all-purpose way to say "thank you" in Korean — the safest choice for shops, restaurants, work, and any unfamiliar setting. Among close friends the word changes to 고마워 (gomawo).

감사합니다 (gamsahamnida) is the formal way to say "thank you" in Korean and the version most learners are taught first. Built from 감사 (gamsa, "gratitude" — Sino-Korean 感謝) plus 하다 (to do) plus the formal 합니다 ending, it is the safest "thank you" for any context: shops, restaurants, formal greetings, business meetings, broadcasting. The polite-informal version 고마워요 (gomawoyo) and casual 고마워 (gomawo) come from a different root verb 고맙다 — both mean the same thing but signal closeness. K-pop idols thanking fans use 감사합니다 (formal) almost universally; among friends 고마워 dominates. When unsure, default to 감사합니다.

Literal meaning
I do gratitude / I thank
Origin
감사 (Sino-Korean 感謝, "gratitude") + 하다 (to do) + formal speech-level ending. The -합니다 ending marks 합쇼체 (formal speech).

Examples in context

Standalone formal thanks

The default polite thank-you — strengthen it with 정말 or 대단히.

감사합니다.
Gamsahamnida.
Thank you. (formal)
Universal polite thank-you
정말 감사합니다.
Jeongmal gamsahamnida.
Thank you very much.
Emphasized formal thank-you
대단히 감사합니다.
Daedanhi gamsahamnida.
Thank you so much.
Heightened formality

Thanking for something specific

Attach the reason with -아/어서 ("for ~ing").

도와주셔서 감사합니다.
Dowajusyeoseo gamsahamnida.
Thank you for helping me.
Specific gratitude
와 주셔서 감사합니다.
Wa jusyeoseo gamsahamnida.
Thank you for coming.
Greeting guests
기다려 주셔서 감사합니다.
Gidaryeo jusyeoseo gamsahamnida.
Thank you for waiting.
Service context

In business & writing (감사드립니다)

감사드립니다 (gamsadeurimnida) is the humble, formal-written form — emails, speeches, announcements.

항상 감사드립니다.
Hangsang gamsadeurimnida.
I'm always grateful.
Formal / written gratitude
진심으로 감사드립니다.
Jinsimeuro gamsadeurimnida.
I sincerely thank you.
Heartfelt formal thanks
여러분께 감사드립니다.
Yeoreobun-kke gamsadeurimnida.
I thank you all.
Addressing an audience

The casual alternative (고마워 / 고마워요)

Among friends the verb changes to 고맙다 → 고마워; add 요 for polite-casual.

고마워!
Gomawo!
Thanks! (casual)
Casual register — different verb
고마워요.
Gomawoyo.
Thank you. (polite-casual)
Warmer than 감사합니다
정말 고마워.
Jeongmal gomawo.
Thanks so much.
Emphasized casual

Replying to thanks

The natural replies are 아니에요 / 별말씀을요; the textbook one is 천만에요.

아니에요, 괜찮아요.
Anieyo, gwaenchanayo.
No, it's nothing.
Casual-polite "you're welcome"
천만에요.
Cheonmaneyo.
You're welcome.
Textbook reply
별말씀을요.
Byeolmalsseumeullyo.
Don't mention it.
Natural polite reply

감사합니다in K-pop & K-drama

K-pop idol speeches

At award shows, fan meetings, and the end of concerts, idols thank fans with 감사합니다 — often the more humble 감사드립니다 in prepared speeches. The formal register signals respect to a large, public audience, no matter how affectionate the relationship with fans.

Service culture

Walk through any Korean shop, cafe, or restaurant and you will hear a steady chorus of 감사합니다, frequently followed by 또 오세요 ("come again"). Staff use the formal form by default with every customer, which is why it is the first "thank you" most visitors learn by ear.

감사합니다 vs 고맙습니다

감사 is Sino-Korean while 고맙다 is native Korean, so 고맙습니다 is the "pure Korean" formal thank-you. Both are perfectly polite and interchangeable; some Koreans deliberately prefer 고맙습니다 for its native roots, and you will hear both in formal settings.

When to use 감사합니다

  • Default polite "thank you" in any unfamiliar setting
  • Service interactions: shops, restaurants, taxis
  • Business and formal communication
  • K-pop idol speeches, public-facing thank-yous
  • Whenever you are unsure of the formality level

When NOT to use 감사합니다

  • Casual peer interactions where 고마워 fits better
  • Sarcastic or ironic gratitude (use casual register for that)
  • In writing, when 감사드립니다 (gamsadeurimnida, more humble) is preferred

감사합니다 vs. similar terms

The Korean "thank you" ladder — from casual to formal

RegisterExpressionRomanizationUse with
Casual고마워gomawoclose friends, younger people
Polite-casual고마워요 / 감사해요gomawoyo / gamsahaeyoacquaintances, slightly senior
Formal감사합니다gamsahamnidastrangers, service, business
Most humble (written)감사드립니다gamsadeurimnidaemails, speeches, announcements

Related terms

Cluster · Politeness

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Greetings, thanks, apologies, support — the social-glue vocabulary.

Frequently asked questions

How do you say "thank you" in Korean?

The formal "thank you" is 감사합니다 (gamsahamnida). The polite version is 고마워요 (gomawoyo) and the casual version is 고마워 (gomawo). 감사합니다 is the safest default in any unfamiliar setting.

What is the difference between 감사합니다 and 고마워?

They both mean "thank you" but come from different verb roots and serve different speech levels. 감사합니다 (gamsahamnida) is formal — for service, business, strangers. 고마워 (gomawo) is casual — for friends, family, close peers. 고마워요 (gomawoyo) is the polite-informal middle ground.

Can I say 감사합니다 to a friend?

You can, but it sounds overly formal between close friends and may feel distant. Friends typically say 고마워 (gomawo). Save 감사합니다 for situations where politeness matters more than warmth.

How is 감사합니다 pronounced?

감사합니다 is pronounced [kam.sa.ɦam.ni.da] — "gam-sa-ham-ni-da." Five syllables, all light. Note: in fast speech the H in 합 often weakens, sounding closer to "gam-sa-am-ni-da."

What is the difference between 감사합니다 and 감사드립니다?

Both are formal, but 감사드립니다 (gamsadeurimnida) is more humble and is preferred in writing and prepared speeches — emails, announcements, award acceptances. 감사합니다 is the everyday spoken formal thanks; 감사드립니다 adds a layer of deference.

How do you say "you're welcome" in Korean?

The textbook reply is 천만에요 (cheonmaneyo), but in real life Koreans more often say 아니에요 (anieyo, "it's nothing") or 별말씀을요 (byeolmalsseumeullyo, "don't mention it"). Among friends a simple 아니야 (aniya) works.

More Korean slang?

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