四

sì

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

Meaning · English

The number four, in counting and in figures. 四个人 is 'four people', 四月 April, 星期四 Thursday, 第四 'fourth'. Because sì sounds close to 死 sǐ 'to die', many people avoid it in phone numbers, car number plates and floor numbers.

Nghĩa · Tiếng Việt

Số bốn, dùng khi đếm và khi đọc các con số. 四个人 là bốn người, 四月 là tháng tư, 星期四 là thứ năm, 第四 là “thứ tư” (số thứ tự). Vì sì đọc gần giống 死 sǐ (tử, nghĩa là chết) nên nhiều người kiêng số này khi chọn số điện thoại, biển số xe, số tầng.

NumeralRegister: neutral

Examples

我家有四口人。Wǒ jiā yǒu sì kǒu rén.There are four people in my family.

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 “四” mean?

The number four, in counting and in figures. 四个人 is 'four people', 四月 April, 星期四 Thursday, 第四 'fourth'. Because sì sounds close to 死 sǐ 'to die', many people avoid it in phone numbers, car number plates and floor numbers.

Is “四” formal or informal?

四 is generally neutral.

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