Crooks vs Thieves

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

Crooks

Informal Top 2,000 (common)

Thieves

Top 3,000 (common)

Most formal: Thieves Most common: Crooks

	Crooks	Thieves
Pronunciation	🇬🇧 //krʊks// 🇺🇸 //krʊks//	🇬🇧 //θiːvz// 🇺🇸 //θivz//
Meaning	People who do bad things to get money.	People who steal things.
Example	The crooks managed to escape before the police arrived.	The police arrested several thieves after a string of robberies in the neighborhood.
Register	Informal	Neutral
How common	Top 2,000 (common)	Top 3,000 (common)
Collocations	catch crooks, crooks and thieves, crooks in the city	catch thieves, avoid thieves, thieves in the night
Antonyms	honest, lawful, upright	honest people, law-abiding citizens
Common mistakes	Confused with 'criminals'—crooks can be more informal., Used in singular form—correctly is 'crooks' for more than one., Assumed to only mean violent offenders, but it can refer to any dishonest person.	Confused with 'thief' for singular form., Using 'stealers' instead of 'thieves'.
Usage notes	Usually used in casual conversations. Not appropriate in a formal setting. Can also imply humor.	Use 'thieves' in contexts involving crime or theft. Avoid using it lightly; it's a serious term.

See it in real clips

Agents of S.H.I.E.L.D. › S1 E1

I couldn't even get workman's comp from those crooks. I don't think...

Crooks

The Lord Of The Rings › The return of the king

Thieves.

Breaking Bad › S1 E7

So these thieves, did they say where they would be stealing it from?

The Lord Of The Rings › The return of the king

Thieves.

Breaking Bad › S1 E7

So these thieves, did they say where they would be stealing it from?

Thieves

Frequently asked questions: Crooks vs Thieves

What's the difference between Crooks and Thieves?

Crooks: People who do bad things to get money. Thieves: People who steal things.

Which is more formal: Crooks and Thieves?

Thieves is the most formal of these.

Which is more common: Crooks and Thieves?

Crooks is the most common in everyday English.

Can you show an example of each?

Crooks: The crooks managed to escape before the police arrived. Thieves: The police arrested several thieves after a string of robberies in the neighborhood.

Can I use Crooks and Thieves interchangeably?

Not always. Crooks and Thieves 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.