What 듭 means
It has no fixed meaning alone; its neighbors decide the reading.
Hangul packs jamos into blocks to show syllables. It was created in the 15th century to represent Korean sounds after Korea’s long use of Chinese writing; the result combines phonetic letters with an ideograph-like block format.
The word 거듭 descends from Middle Korean 거듧, attested in 1489, and means “repeatedly.” That evolution belongs to the word, not to an isolated meaning for 듭.
Inside -ㅂ니다 forms, 듭 can mark formal-polite Korean; alone, it has no register.
Do not translate 듭 alone as “again”; that reading belongs to 거듭.
What it means when someone sends it to you
3 readingsQuestions people ask
1Why does 듭 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 듭
듭\B4EDCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.