秘密
mì mì
In real, traceable use. Part of the curated seed collection; community review is coming.
A secret — something kept hidden from other people; also the adjective 'secret'. The measure word is 个: 一个秘密 'a secret'. 告诉你一个秘密 is 'let me tell you a secret', and 'to keep a secret' is 保守秘密 or simply 保密.
Bí mật: điều giấu kín, không cho người khác biết; cũng là tính từ “bí mật, kín”. Lượng từ là 个: 一个秘密 (một bí mật). 告诉你一个秘密 là “nói cho bạn nghe một bí mật”; “giữ bí mật” là 保守秘密, nói gọn là 保密.
NounRegister: neutral
Examples
Editorial example (illustrative, not a corpus attestation) — awaiting a native-speaker check
Sources & notes
Hán-Việt bridge batch 063 (2026-11-14). Headword, Traditional form and pinyin checked against CC-CEDICT (CC BY-SA 4.0) source ↗ · Hán-Việt reading: Unihan kVietnamese source ↗ ; en.wiktionary Vietnamese entries via kaikki.org extract, snapshot 2026-07-31 (CC BY-SA 4.0): Hán-Việt reading 秘 = bí · Vietnamese cognate: Idiomer entry “bí mật” (bi-mat). Definition, literal gloss and example sentence are original; the example has not had a native-speaker check yet.
Equivalents & related
Common questions
What does “秘密” mean?
A secret — something kept hidden from other people; also the adjective 'secret'. The measure word is 个: 一个秘密 'a secret'. 告诉你一个秘密 is 'let me tell you a secret', and 'to keep a secret' is 保守秘密 or simply 保密.
Is “秘密” formal or informal?
秘密 is generally neutral.