Vietnamese Nôm character đẹt

It writes the Vietnamese syllable đẹt. Chữ Nôm — usually rendered 'the southern script' — is the writing Vietnam built on Chinese character forms; for centuries it recorded Vietnamese poetry, stories and documents, until the Latin-based chữ Quốc ngữ gradually replaced it in the early twentieth century.

A Hán-Nôm dictionary records this exact form as đẹt, used to write đì đẹt and lẹt đẹt. In lẹt đẹt, context picks the sense: progress that lags behind, or — for sounds — small, dull pops spaced apart.

How does 𫯇 spell đẹt?

One part gives the sense, the other the sound. One common way Nôm writers wrote Vietnamese words that Chinese had no character for was to join two Chinese elements: one borrowed for meaning, one for pronunciation. Here 声, 'sound', on the left fits the word's popping-noise sense, and 達 on the right — read đạt in Sino-Vietnamese, the traditional Vietnamese pronunciation of the Chinese character — seems to give the sound that yields đẹt.

That build is common in Nôm, though not the only recipe: thousands of Nôm characters are sense-plus-sound compounds, which is why they look like Chinese characters yet read as purely Vietnamese words.

Where will you actually meet 𫯇?

Mostly in Nôm dictionaries. It is documented in Hán-Nôm dictionaries, the reference works for Vietnam's old script, and Vietnam itself submitted it for encoding. Everyday Vietnamese is written in the Latin alphabet, so a rare Nôm spelling like this lives in scholarship rather than ordinary writing.

It sits in CJK Extension E, a block for rare characters, so it draws only on devices that have a font covering it — on many it appears as an empty box.