Why does 5 o mean police?
Asked by: Celine Gulgowski I | Last update: March 5, 2026Score: 4.7/5 (24 votes)
"5-O" (pronounced five-oh) means police because of the popular 1968-1980 TV show Hawaii Five-O, named for Hawaii being the 50th U.S. state, and the show's success made the term a widespread slang for law enforcement, notes Mental Floss, Garmont Tactical, and Wiktionary. While the show featured a fictional state police unit, the name caught on as general police slang, even though real Hawaiian police aren't called that, according to Garmont Tactical and Quora users.
Why is the police called Five 0?
“Five-o” referred to the Hawaiian police force in the show, based on Hawaii being the fiftieth state to join the union. Though inaccurate, as Hawaiian police officers in real life have no such designation, the nickname became popular among fans and is still used to refer to police across the country to this day.
What does 5.0 mean for cops?
Cops as 5-0 and the 12
Slang terms for police are endless, but only a few have had any real staying power. One exception is 5-0, or Five-0, which appears to stem from the 1968 to 1980 television cop drama Hawaii Five-0. In the context of the show, “Five-0” referred to Hawaii being the 50th state.
What is 5o slang for?
I've heard quite a few times the term "five O" (eg in the US TV show "the Wire"). It seems to mean "police" (inferred from the context), and I'm curious to know where the expression comes from, and if it has a broader meaning than just "police".
What does 5 mean in police code?
Police Code 5 most commonly means an officer is on a stakeout, surveillance, or undercover operation, signaling other units to avoid the area or proceed with caution, though meanings vary by department and can sometimes refer to requesting backup or a dead body. Codes aren't universal, so Code 5 might also mean "relay," "busy," or "call your station," but the surveillance meaning is widespread in media and practice.
FAQ: What does it mean when you plead the fifth?
Does 10/7 mean dead?
"10-7" typically means "Out of Service" (off duty, on break, or unavailable), but it's often used as a euphemism for deceased in law enforcement radio, signifying an officer is permanently "out of service," especially during a funeral ceremony where other units stop transmitting in tribute. While the standard code is "out of service," the meaning can shift contextually or by agency to mean "dead," though other specific codes (like "Signal 7" or "10-67") also exist for death.
What does 5 by 5 mean in police?
The phrase "five by five" can be used informally to mean "good signal strength" or "loud and clear". An early example of this phrase was in 1946, recounting a wartime conversation.
What does it mean when someone says 5 o?
Five-O, an North American slang term for law enforcement.
What is a cop in slang?
In slang, "cop" primarily means to get, grab, or buy something, like "copping new sneakers," but it also commonly refers to a police officer, shortened from "copper," and can mean to steal or confess in other phrases, such as "cop a plea" or "cop to it". The meaning depends heavily on context, stemming from its root meaning of "to seize" or "take".
What is a rip in NYPD?
A "RIP", Reduction In Pay, is NYPD slang for a disciplinary action being taken against a Member Of the Service (MOS). A one day RIP, loss in pay, would mean that the cop would lose one vacation day as a penalty for an infraction.
Why are cops called 12?
Police are called "12" primarily due to the police radio code "10-12," meaning "visitors/civilians present" or "stand by," which became a shorthand for police presence, popularized by hip-hop and street culture as a quick warning; other theories include the TV show Adam-12 or Atlanta narcotics units.
Is Five 0 a real task force?
No, there isn't a real "Hawaii Five-0" task force; it's a fictional state police unit from the popular TV shows, but Hawaii does have real multi-agency task forces like the military's Joint Task Force 5-0 (JTF 5-0) for disaster response, and county police handle most local law enforcement, with no equivalent statewide elite unit like the show's.
What is code 7 for cops?
Police code "7" varies significantly by agency, but most commonly means meal break/lunch (Code 7) or out of service/unavailable (10-7), though it can also indicate serious situations like a dead body, an intoxicated person, or even an officer in danger (Signal 7 in some areas), highlighting the need to check local protocols.
Why do cops call their cars shops?
That is the “shop number,” to differentiate each police car from each other for maintenance purposes. Therefore, cops would routinely be asked for their shop number and that was shortened over the years to simply “their shop” and the nickname stuck.
Are Hawaii 5-0 police?
The show's main character, Detective Steve McGarrett (Jack Lord), led a fictional group of state police officers who reported directly to the governor, thwarting spies and breaking up crime syndicates around the islands.
What is a derogatory term for a police officer?
Law-Dog. A derogatory word for an officer of the law, popularized by the movie Tombstone.
What can I say instead of police?
Synonyms of police officer
- policeman.
- officer.
- cop.
- constable.
- sheriff.
- copper.
- lawman.
- police.
What does 5.0 stand for?
5-0 was from "hawaii 5-0." despite "5-0" coming to mean police, it was a reference to hawaii being the 50th state and sounded cool for a tv show title. Hawaii became a state in 1959, the tv show first aired in 1968, and while that seems a bit apart it was still a state for only 9 years at that point.
What does 5 o mean in slang?
Five-oh (or five-o) and twelve are two numerical, Black, slang designations for the police. Both appear, at least at first glance, to come from the titles of old U.S. television series: Hawaii Five-O (1968–80, rebooted 2010–present) and Adam-12 (1968–75).
Where did the phrase "5 o'clock" somewhere come from?
The saying "It's 5 o'clock somewhere" became a cultural phenomenon and widely popularized by the hit 2003 country duet by Alan Jackson and Jimmy Buffett, though the phrase itself predates the song, existing as a general justification for drinking early by leveraging different time zones, a concept writer Don Rollins noted was a teacher's idea, fitting perfectly with the laid-back vibe {3, 4, 6}.
What does 505 mean in police code?
10854. Tampering with a motor vehicle. 505. 23103. Reckless driving.
Is 5 by 5 used in Morse code?
QOS (quality of signal) QSL for Morse code guys scale of 1 to 5. Usually 2 numbers 5 by 5. Way to let the other side know signal strength and message intelligibility.
What is a 10/5 code?
(d) “10-2” means “Signal is good.” (e) “10-3” means “Stop transmitting.” (f) “10-4” means “Acknowledgement” or “Okay.” (g) “10-5” means “Relay” and the following alphanumeric codes indicate what is being relayed.