English · Phrasal verb Attested

sign up

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

Sense 1

Both English Tiếng Việt

Meaning · English

To add a name to the list of people who are participating in something.

Nghĩa · Tiếng Việt

Đăng ký tham gia

Machine-translated — suggest a fix

Where it’s used: Used American English

We signed Bob up for kitchen cleanup duty.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Both English Tiếng Việt

Meaning · English

To add one's own name to the list of people who are participating in something (including amateur, but not professional, teams).

Nghĩa · Tiếng Việt

Đăng ký tham gia một hoạt động

Machine-translated — suggest a fix

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Both English Tiếng Việt

Meaning · English

To agree to purchase some good or service.

Nghĩa · Tiếng Việt

Đồng ý mua hàng hoặc dịch vụ

Machine-translated — suggest a fix

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

What does “sign up” mean?

To add a name to the list of people who are participating in something.

Is “sign up” formal or informal?

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