English · Slang Attested

back door

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

Both English Tiếng Việt

Meaning · English

To betray (someone); to double-cross (someone); to set (someone) up; to take advantage of (someone's) trust.

Nghĩa · Tiếng Việt

phản bội, lợi dụng lòng tin

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).

Common questions

What does “back door” mean?

To betray (someone); to double-cross (someone); to set (someone) up; to take advantage of (someone's) trust.

Is “back door” formal or informal?

back door is generally slang.