English · Phrasal verb Attested

sit up

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

Sense 1

Both English Tiếng Việt

Meaning · English

To assume a sitting position from a position lying down.

Nghĩa · Tiếng Việt

ngồi dậy từ vị trí nằm

Machine-translated — suggest a fix

Where it’s used: Used American English

Despite being cancer-ridden, Lorin sat up to greet the visitors.

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 sit erect.

Nghĩa · Tiếng Việt

ngồi thẳng người

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 show sudden interest or surprise.

Nghĩa · Tiếng Việt

bộc lộ sự quan tâm hoặc ngạc nhiên đột ngột

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 “sit up” mean?

To assume a sitting position from a position lying down.

Is “sit up” formal or informal?

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