What 껀 means
Read it as part of a Korean word, not as a reaction.
In standard Korean pronunciation, the second syllable of 사건 is [껀], but the written word stays 사건. That is a sound pattern for that word, not a separate standalone meaning owned by 껀.
If you mean “case” or “matter” in a phrase such as 습득 건, write 건. An official Korean-language answer treats 습득 껀 as incorrect spelling for that use.
껀 is an assembled Hangul block, not a separate invention
Hangul itself was created in 1443, and a 1446 book explained its purpose and principles. It was built to write Korean accessibly where Chinese-character-based methods were difficult for many readers.
껀 is one assembled block from the jamo ㄲ, ㅓ, and ㄴ. In text it can be stored as one precomposed block or as its jamo sequence. In the sources checked for this page, no separate ritual, political, or community meaning for 껀 appears.
How do I type 껀?
Use a Korean Hangul IME, then enter ㄲ + ㅓ + ㄴ.
On the standard two-set QWERTY layout, press Shift+R, then J, then S. Windows Korean IME composes those jamo into one syllable block; if they stay separate, switch the input mode to Hangul.
In written Korean, 껀 is not a casual tone marker; using it for 건 can make an ordinary message look misspelled.
Do not write 건 as 껀 just because 사건 sounds like 사껀.
What it means when someone sends it to you
3 readingsDon't confuse it with
1Questions people ask
2Is 껀 a Korean word?
Ask for context. Alone, 껀 does not tell you which Korean word or pronunciation is intended; it may be a spelling error or a fragment.
Why does 껀 look different from jamo?
Yes — they can represent the same syllable. One is a precomposed block and the other is a jamo sequence; normalization can make them compare alike while cursor or length tools expose different underlying text.
How to type 껀
껀\AEC0Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.