Cop vs There was a copper

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

Cop

InformalTop 2,000 (common)C1noun

There was a copper

InformalTop 5,000 (fairly common)
Most common: Cop
 CopThere was a copper
Pronunciation🇬🇧 /["/kɒp/"]/🇺🇸 /["/kɑːp/"]/🇬🇧 //ˈkɒp.ə//🇺🇸 //ˈkɑː.pɚ//
MeaningA police officer.A person who works in law enforcement, like a police officer.
ExampleSomebody call the cops!When I saw a copper, I felt safe walking home.
RegisterInformalInformal
How commonTop 2,000 (common)Top 5,000 (fairly common)
CEFR levelC1-
Part of speechnoun
Collocationscop car, cop chase, cop drama, dirty cop, cop on the beatcall a copper, sight a copper, a friendly copper, copper on duty, copper's badge
Antonymscivilian-
Common mistakesConfused with 'cop out', which means to avoid responsibility., Using 'cop' to refer to security guards or other types of law enforcement incorrectly., Mispronouncing as 'cape' instead of 'cʌp'.Confused with 'copper' as a metal., Using 'coppers' in plural form incorrectly when referencing police in a general context.
Usage notesUsually used informally to refer to police. It can be derogatory in some contexts. Generally acceptable in casual conversations but avoid in formal discussions.Used primarily in casual contexts. Avoid in official or formal discussions about law enforcement.

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There was a copper

Frequently asked questions: Cop vs There was a copper

What's the difference between Cop and There was a copper?

Cop: A police officer. There was a copper: A person who works in law enforcement, like a police officer.

Which is more common: Cop and There was a copper?

Cop is the most common in everyday English.

Can you show an example of each?

Cop: Somebody call the cops! There was a copper: When I saw a copper, I felt safe walking home.

Can I use Cop and There was a copper interchangeably?

Not always. Cop and There was a copper 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.

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