Hangul syllable Tweng

It is a Korean syllable; the surrounding word supplies its role. The jamo (Hangul letters) in 퉹 are initial ㅌ, vowel ㅞ, and final ㅇ. Together they form a sound unit rather than a translation; the Korean word around them determines the syllable’s place and meaning.

How did 퉹 develop?

퉹 comes from Hangul’s system of composing syllable blocks. Before Hangul, Korean writing used Chinese characters directly or systems such as Idu, Gugyeol, and Hyangchal, which adapted Chinese characters to Korean words and grammar. Hangul was created in 1443 as a script for writing Korean; its explanatory book, Hunminjeongeum, was published in 1446. Hangul became Korea’s official national writing system in 1894.

Those dates mark the development of Hangul as a whole, not a special origin story for this block. Unicode’s decomposed form is 퉹, three modern Hangul letters in the same initial-vowel-final order. Fonts can vary the parts’ shape, size, and placement without changing the character.