妹妹
mèi mei
In real, traceable use. Part of the curated seed collection; community review is coming.
A younger sister, a sister born after you. An older sister is 姐姐. The second syllable has a neutral tone: mèimei. 姐妹 means sisters, older and younger together.
Em gái, người em gái nhỏ tuổi hơn mình. Chị gái thì là 姐姐. Âm tiết thứ hai đọc thanh nhẹ: mèimei. 姐妹 là chị em gái nói chung.
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 ↗ · No Vietnamese entry is linked as its twin; the Hán-Việt reading is given character by character. Definition, literal gloss and example sentence are original; the example has not had a native-speaker check yet.
Common questions
What does “妹妹” mean?
A younger sister, a sister born after you. An older sister is 姐姐. The second syllable has a neutral tone: mèimei. 姐妹 means sisters, older and younger together.
Is “妹妹” formal or informal?
妹妹 is generally neutral.