Hangul syllable Bbunj

It is one Korean syllable block, not a reaction.

뿑 alone does not express an emotion. In Korean writing, syllable blocks combine into words, and the whole spelling gives a word its meaning. The Unicode label “bbunj” names the block's components; it is not a translation of a Korean word.

If someone sends 뿑 by itself, read it as a fragment of Korean text unless nearby words make its role clear.

How is 뿑 built?

It is a precomposed Hangul syllable made from three Jamo (letters).

Unicode's full decomposition is ᄈ + ᅮ + ᆬ: the initial consonant ㅃ, vowel ㅜ, and final cluster ㄵ. Unicode can store those Jamo separately or combine them into this block; normalization can switch between the forms without changing the character's reading.

An entry from 1443 in the Sejong annals, the historical record of King Sejong's reign, is the earliest official mention of Hunminjeongeum, the Korean writing system. The explanatory book was published in 1446; it describes a system meant to make Korean writing easier to learn and use, and explains how its letters relate to speech sounds.