5150
In real, traceable use. Part of the curated seed collection; community review is coming.
Also seen as: fifty-one fifty
Meaning · English
One who should be involuntarily confined.
Register: slang
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 “5150” mean?
One who should be involuntarily confined.
Is “5150” formal or informal?
5150 is generally slang.