Hangul Syllable Yiss

읬 is a Hangul syllable block whose reading depends on its word. Its Unicode decomposition is ᄋ + ᅴ + ᆻ: an initial position, a vowel, and a final consonant. The label “yiss” is generated from those component labels, not from a word’s meaning. Final ᆻ sounds like a clipped “t” before a pause or consonant; before a following vowel, it links into the next syllable and is pronounced as ㅆ. The surrounding Korean word supplies the full reading.

Hangul was designed to write Korean directly. Before it, Korean was recorded with Chinese characters through systems such as Idu, Gugyeol, and Hyangchal, which were hard for most people to learn. King Sejong created the new script in 1443; the 1446 book Hunminjeongeum explained its purpose and design. Hangul became Korea’s official national writing system in 1894.

How to type 읬?

A Korean Hangul IME composes the block as you type. Enter initial ㅇ, form vowel ㅢ from ㅡ + ㅣ, then add final ㅆ; the input method assembles them as 읬. Exact keystrokes depend on your keyboard layout.

Unicode can store the same text in NFD, its decomposed form, where this syllable is three conjoining jamo, or in NFC, its composed form, where they combine as 읬. Use NFC when you need one precomposed syllable block.