What 꾿 means
꾿 is the hangul syllable ggud. Unicode classifies it as a letter and files it in the Hangul Syllables block; this site shelves it under Chinese, Japanese & Korean.
Its appearance depends on the font and text styling.
How it is encoded
꾿 is a single code point, U+AFBF. In HTML that is 꾿, and in CSS \AFBF.
Don't confuse it with
1Questions people ask
1Why does 꾿 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 꾿
Windows (Word)
Alt+XType AFBF, then Alt+X to get 꾿.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “hangul syllable ggud”.
Linux
Ctrl+Shift+UType afbf, then Enter or Space.
HTML
꾿CSS
\AFBFStandard Korean 2-set keyboard
With Korean input enabled, press Shift+R, N, E to enter ㄲ, ㅜ, ㄷ; the IME combines them as 꾿.
Codes and encoding1 code points
HTML decimal
꾿
HTML hex
꾿
CSS content
content: "\AFBF";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%EA%BE%BF
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.