Hangul syllable hyeogs

It spells a Korean syllable, not a word with a fixed meaning. Hangul blocks combine an opening consonant, a vowel and sometimes a final consonant. 혃 joins ㅎ + ㅕ + final ㄳ, so it functions as a spelling unit inside a Korean word.

Hangul was designed to write Korean speech directly. A first recorded reference to its creation dates to 1443; Hunminjeongeum Haerye, a book explaining the script, was published in 1446. Before Hangul, Idu, gugyeol and hyangchal adapted Chinese characters to record Korean speech or grammar. Early Buddhist and Confucian translations, practical books and daily records show Hangul spreading into wider use.

The modern Korean spelling standard traces to a 1933 unified-spelling draft and a 1988 revision. These dates mark spelling reforms, not the origin of 혃’s block shape.

How do I type 혃?

Use a Korean IME to compose its four jamo. With Hangul composition enabled, type ㅎ, ㅕ, ㄱ, then ㅅ; the final two form ㄳ and the IME joins all four into 혃. If the pieces stay separate, composition has not finished or the input method is not composing Hangul.

Why does its ending sound change?

The final ㄳ is pronounced differently across a syllable boundary. At a word boundary or before a consonant, Korean pronounces final ㄳ like ㄱ. Before a grammatical ending that begins with a vowel, ㄱ stays at the end of 혃 and ㅅ moves to the next syllable as a tense s sound.