What ㅊ means
It marks an airy “ch” sound in Korean.
ㅊ is a letter, not a word; in Korean writing it usually joins a vowel to form a syllable. The first record of Hunminjeongeum, the writing system later called Hangul, dates to 1443; its 1446 book includes ㅊ among the initial consonants. Hangul was designed to make writing Korean more accessible than relying on Chinese characters. The extra stroke links ㅊ to ㅈ as its breathier counterpart, like the pairs ㄱ–ㅋ, ㄷ–ㅌ, and ㅂ–ㅍ.
Why does ㅊ appear in Korean chat?
The letters beside it reveal the shorthand.
As of 2026, Korean online shorthand uses ㅊㅋ for 축하 (“congratulations”) and ㅊㅊ for 추천 (“recommendation”). These casual abbreviations take the first consonants of the full words; they are not readings of ㅊ by itself. A lone ㅊ has no fixed chat meaning, so use the rest of the message to interpret it.
As a letter, ㅊ is neutral; these consonant abbreviations mark casual Korean chat.
A lone ㅊ does not reliably mean “congrats”; use the message context.
What it means when someone sends it to you
3 readingsDon't confuse it with
4Combination ideas
2Questions people ask
1Why does ㅊ show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type ㅊ
ㅊ\314ACodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.