Tiếng Việt · Slang Attested

sn

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In real, traceable use. Part of the curated seed collection; community review is coming.

Also seen as: cmsn

Both English Tiếng Việt

Meaning · English

Texting shortcut for “sinh nhật” — birthday. “cmsn” = chúc mừng sinh nhật (happy birthday).

Nghĩa · Tiếng Việt

ngày sinh nhật

Machine-translated — suggest a fix

Where it’s used: Used Toàn quốc & hải ngoại · Vietnam-wide & diaspora Origin Mạng xã hội · Vietnamese internet culture

Sources & notes

Curated editorially (texting-shortcut collection, July 2026).

Common questions

What does “sn” mean?

Texting shortcut for “sinh nhật” — birthday. “cmsn” = chúc mừng sinh nhật (happy birthday).

Is “sn” formal or informal?

sn is generally informal; connotation: texting shorthand.

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