What ᄡ means
It is a narrow compatibility form of Korean jamo ㅄ. A jamo is a letter component in Hangul; ㅄ represents the consonant combination pieup-sios. ᄡ is the halfwidth text form of that same compatibility letter.
The family’s computer-code history reaches the KS C 5601 seven-bit Hangul layout. A 1982 revision and later KS C 5601 and KS X 1001 work continued the effort to standardize Korean text codes. These layouts served input, storage, exchange, and display; they did not give ㅄ a new meaning.
The ordinary compatibility form is ㅄ. The related conjoining form ᄡ is used in Hangul syllable composition, while ᄡ preserves a narrow form for legacy-width data.
How do I type ᄡ?
Use a Unicode-aware input method; a Korean keyboard usually will not offer it.
A standard Korean input method usually has no key for this halfwidth character. Enter ㅄ or the completed Hangul syllable you need for ordinary Korean text. In a programming language that accepts Unicode escapes, \uFFB4 represents this character.
If the narrow width is not required, use ㅄ. Compatibility normalization can convert ᄡ to its related compatibility jamo, so check whether your workflow preserves the original character when exact round-tripping matters.
Technical and archival: it points to a width or encoding constraint, not a conversational tone.
Use ㅄ for ordinary Korean text; some fonts show ᄡ as a box or at the wrong width.
Part of the collection
Who writes ᄡ
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Don't confuse it with
1Questions people ask
1Why does ᄡ show as a box?
The font may not include halfwidth Hangul, or it may draw the character at the wrong width. A 2020 Noto CJK issue recorded missing-glyph and width failures on Android and Windows. A font with this glyph should display it; use ㅄ when the narrow layout is unnecessary.
How to type or find ᄡ
- Also called
- bieub-sios
- Search it as
- ㅄ · halfwidth jamo · narrow jamo · legacy Hangul · Korean jamo · FFB4 · bieup siot · korean consonant cluster · bieup sios · korean bs
- Shows up in
- Anything that takes text · its shape is whatever your font draws
ᄡ\FFB4\uFFB4.Why is ᄡ a box on my screen?
fsymbols draws rare signs with its own fonts, so they show here even where your device has none. An app or website without such a font shows an empty box (□) or a question mark instead. Turn our fonts off to see each sign as your device draws it by itself: a box here means a box in your chats and documents too.
Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.


