Perpetrator vs We've got a serial killer

When to use each in English, with meaning, register, and examples.

Perpetrator

Top 5,000 (fairly common)

We've got a serial killer

Top 2,000 (common)
Most common: We've got a serial killer
 PerpetratorWe've got a serial killer
Pronunciation🇬🇧 //ˈpɜː.pə.treɪ.tə//🇺🇸 //ˈpɜr.pə.trɪˌteɪ.tər//🇬🇧 //ˈsɪəriəl ˈkɪlə//🇺🇸 //ˈsɪriəl ˈkɪlər//
MeaningA person who commits a crime or harmful act.A person who kills many people over time.
ExampleThe police arrested the **perpetrator** after the robbery.In the latest news report, we've got a serial killer terrorizing the city.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 2,000 (common)
Collocationsidentified perpetrator, suspected perpetrator, perpetrator arrested, violent perpetrator, perpetrator of a crimecapture a serial killer, profile a serial killer, suspect a serial killer, track a serial killer, identify a serial killer
Common mistakesConfused with 'victim' - a perpetrator commits an act, while a victim suffers from it., Using it to describe an innocent person., Mispronouncing it due to the complex spelling.Confusing 'serial killer' with 'mass murderer', which has a different implication., Using it in casual conversation when it’s not a serious topic., Misunderstanding the term to mean 'killer that is neat or orderly'.
Usage notesUsed in legal contexts and discussions about crime. Avoid informal situations.Use this phrase when discussing criminal cases or in storytelling. It's often used in news or dramatic contexts.

See it in real clips

We've got a serial killer

Frequently asked questions: Perpetrator vs We've got a serial killer

What's the difference between Perpetrator and We've got a serial killer?

Perpetrator: A person who commits a crime or harmful act. We've got a serial killer: A person who kills many people over time.

Which is more common: Perpetrator and We've got a serial killer?

We've got a serial killer is the most common in everyday English.

Can you show an example of each?

Perpetrator: The police arrested the **perpetrator** after the robbery. We've got a serial killer: In the latest news report, we've got a serial killer terrorizing the city.

Can I use Perpetrator and We've got a serial killer interchangeably?

Not always. Perpetrator and We've got a serial killer are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

Related comparisons