tư

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Non-Sino-Vietnamese reading of Chinese 四 (“four”, SV: tứ).

tư • (四, 𦊛)

1. (chiefly Northern Vietnam, only in compounds) four

   hai mươi tư ― twenty four

   một trăm linh tư ― one hundred and four

2. fourth

   ba phần tư ― three quarters

   thứ tư ― fourth/Wednesday

   tháng tư ― fourth month/April

3. (Southern Vietnam, of a sibling) third-born

   chú tư ― "fourth" uncle (your grandparents' third child, who's male and who's younger than one of your parents)

   anh tư ― "fourth" big brother (your parents' third child who's your older brother)

   chị tư ― "fourth" big sister (your parents' third child who's your older sister, or a woman whose husband's his parents' third child)

• Unlike other cardinal numbers, the ordinal phrasal expression for bốn (“four”) is generally not *thứ bốn, but thứ tư (“fourth”).

• bốn

Sino-Vietnamese word from 私.

tư

1. (formal or of a school) private

   Synonyms: riêng, tư thục

   Antonyms: công, chung

   riêng tư ― private and personal

   việc tư ― private affairs

   công tư phân minh ― upright about the boundary between public and private matters

Sino-Vietnamese word from 斯.

tư

1. (only in compounds) this (occurred in compounds derived from or in the style of Classical Chinese)

tư

1. Sino-Vietnamese reading of 司
2. Sino-Vietnamese reading of 資
3. Sino-Vietnamese reading of 思
4. Sino-Vietnamese reading of 咨
5. Sino-Vietnamese reading of 姿
6. Sino-Vietnamese reading of 玆
7. Sino-Vietnamese reading of 滋