English · Phrasal verb Attested

do in

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

Sense 1

Both English Tiếng Việt

Meaning · English

To kill or end; to defeat.

Nghĩa · Tiếng Việt

giết hoặc chấm dứt

Machine-translated — suggest a fix

Where it’s used: Used American English

By the eighth mile, I was sure that finishing the 10-mile hike would do me in.

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 exhaust, to tire out.

Nghĩa · Tiếng Việt

làm kiệt sức

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 damage or injure.

Nghĩa · Tiếng Việt

Gây tổn hại hoặc làm bị thương

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 “do in” mean?

To kill or end; to defeat.

Is “do in” formal or informal?

do in is generally colloquial.