English · Phrasal verb Attested

jam up

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

Sense 1

Both English Tiếng Việt

Meaning · English

To cause (something) to become blocked or clogged; to clog up.

Nghĩa · Tiếng Việt

làm tắc nghẽn hoặc bị kẹt

Machine-translated — suggest a fix

Where it’s used: Used American English

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 become blocked or clogged.

Nghĩa · Tiếng Việt

bị tắc nghẽn hoặc kẹt

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 cause trouble; to stop or inhibit (someone, something).

Nghĩa · Tiếng Việt

gây rối hoặc cản trở

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 “jam up” mean?

To cause (something) to become blocked or clogged; to clog up.

Is “jam up” formal or informal?

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