Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
criminal underworld
Grammar usage guide and real-world examplesUSAGE SUMMARY
"criminal underworld" is correct and usable in written English.
You can use it to describe a hidden criminal society of people, who are connected by money, power and influence. For example, "The criminal underworld has been operating in this city for centuries, and it's all but impossible to break up their network."
✓ Grammatically correct
News & Media
Encyclopedias
Wiki
Alternative expressions(20)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
56 human-written examples
"The criminal underworld is providing prohibited substances.
News & Media
Members of the criminal underworld, beware the little children.
News & Media
On March 29th, it unveiled reforms designed to tackle the "Mr Bigs" of the criminal underworld.
News & Media
Thejournal.ie reported there was "evidence of a major fallout among Dublin's criminal underworld" over the weekend.
News & Media
We know now that News International, Mr. Speaker, had entered the criminal underworld.
News & Media
Armed gangs and a vast criminal underworld hold sway in many parts of the country.
News & Media
Your story, "Goo Book," is set in the criminal underworld of London.
News & Media
Law enforcement officials complain that dealers are playing down art's role in a criminal underworld.
News & Media
In this fast-moving criminal underworld crews and captains play for high stakes.
News & Media
Skate's alleged connections with the Port Moresby criminal underworld soon brought him notoriety.
Encyclopedias
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Their music is in the style of Russian chanson, which is music from the perspective of the criminal underworld.
Wiki
Expert writing Tips
Best practice
Use "criminal underworld" to refer to organized, often hidden networks of criminal activity. It's particularly effective when discussing the broader structures and systems that support crime, rather than isolated incidents.
Common error
While "criminal underworld" evokes a certain image, avoid pairing it with overly dramatic adjectives or descriptions unless genuinely warranted. Overuse can dilute the impact and make your writing sound less credible.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "criminal underworld" functions primarily as a noun phrase. It refers to the aggregate of individuals and organizations engaged in illicit activities, suggesting a hidden and interconnected network, as evidenced by Ludwig's examples.
Frequent in
News & Media
75%
Wiki
10%
Encyclopedias
5%
Less common in
Formal & Business
3%
Science
2%
Reference
5%
Ludwig's WRAP-UP
The phrase "criminal underworld" is a commonly used and grammatically correct noun phrase that refers to the hidden networks of individuals and organizations involved in illicit activities. As Ludwig AI confirms, this phrase is versatile, appearing frequently in news reports, encyclopedias, and other sources. Related terms include "organized crime" and "criminal syndicate". When using the phrase, it's best to focus on the broader structures and systems supporting crime, while avoiding overly sensational language to maintain credibility.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
criminal gang
A more general term for a group of criminals operating together.
criminal mafia
Focuses specifically on organized crime groups with a hierarchical structure.
criminal syndicate
Refers to a group of individuals or organizations involved in organized crime.
criminal milieu
Emphasizes the environment or social setting associated with criminal activity.
criminal mob
Indicates a large, often disorderly group engaged in criminal behavior.
criminal kingpin
Highlights the leader or central figure in a criminal organization.
terrorist underworld
Links criminal activities with terrorism, suggesting a network supporting terrorist acts.
criminal triad
Refers specifically to Chinese organized crime groups.
sinister underworld
Adds a darker, more ominous tone to the concept of criminal activity.
criminal netherworld
A more figurative expression that suggests the darkest aspects of crime.
FAQs
How can I use "criminal underworld" in a sentence?
You can use "criminal underworld" to describe organized crime networks, such as "The police investigation revealed a vast network of corruption within the city's "criminal underworld"."
What are some alternatives to "criminal underworld"?
Some alternatives include "organized crime", "criminal network", or the "mafia", depending on the specific context.
Is "criminal underworld" a formal or informal term?
"Criminal underworld" is generally considered a neutral term suitable for both formal and informal contexts, though it is often used in journalistic and narrative writing.
How does the "criminal underworld" relate to concepts like "organized crime"?
The "criminal underworld" is a broader term encompassing various forms of "organized crime" and illicit activities, representing the hidden network of individuals and groups involved in illegal enterprises.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested