English · Slang Attested

square john

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

Both English Tiếng Việt

Meaning · English

A prisoner who generally obeys the rules and avoids trouble.

Nghĩa · Tiếng Việt

Tù nhân vâng quy tắc và tránh rắc rối

Machine-translated — suggest a fix

Where it’s used: Used American English

Occasionally reputable persons, or "square johns," commit a felony of the type that leads to arrest […]

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).

Common questions

What does “square john” mean?

A prisoner who generally obeys the rules and avoids trouble.

Is “square john” formal or informal?

square john is generally slang.

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