English · Word Candidate

yesterday

/ˈjɛstədeɪ/

Proposed by a contributor, not yet supported by evidence.

Also seen as: yesterdays

Sense 1

Both English Tiếng Việt

Meaning · English

The day immediately before today; one day ago.

Nghĩa · Tiếng Việt

Ngày ngay trước ngày hôm nay

Machine-translated — suggest a fix

Noun

Examples

Today is the child of yesterday and the parent of tomorrow.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 2

Both English Tiếng Việt

Meaning · English

The past, often in terms of being outdated.

Nghĩa · Tiếng Việt

Quá khứ, thường là lỗi thời

Machine-translated — suggest a fix

Noun

Examples

yesterday's technology

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 3

Both English Tiếng Việt

Meaning · English

On the day before today.

Nghĩa · Tiếng Việt

Vào ngày trước ngày hôm nay

Machine-translated — suggest a fix

Adverb

Examples

I started to watch the video yesterday, but could only finish it this evening.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 4

Both English Tiếng Việt

Meaning · English

As soon as possible.

Nghĩa · Tiếng Việt

Ngay lập tức

Machine-translated — suggest a fix

AdverbRegister: informal

Examples

I want this done yesterday!

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “yesterday” mean?

The day immediately before today; one day ago.

Is “yesterday” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.