Chill out vs Don't worry

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

Chill out

InformalTop 2,000 (common)

Don't worry

Top 2,000 (common)
Most formal: Don't worry
 Chill outDon't worry
Pronunciation🇬🇧 //tʃɪl aʊt//🇺🇸 //tʃɪl aʊt//🇬🇧 //dəʊnt ˈwʌri//🇺🇸 //doʊnt ˈwɜri//
MeaningCalm down and relax.A way to tell someone not to be anxious.
ExampleYou need to chill out and stop worrying so much about the exam.You'll be fine on your exam, so just don't worry.
RegisterInformalNeutral
How commonTop 2,000 (common)Top 2,000 (common)
Collocationschill out time, chill out period, chill out zonedon't worry about it, don't worry too much, don't worry, everything will be fine
Antonyms-worry, fret, stress
Common mistakes'Chill out' is often confused with 'cool off', but the meanings can slightly differ., Some learners use 'chill out' in a serious context, which may sound inappropriate., Using 'chill out' as a command can come off as rude.Omitting 'don't' and saying 'worry'., Using it in overly serious contexts., Confusing with 'don't care'.
Usage notesUse 'chill out' in casual conversations to suggest someone should relax. Avoid in formal contexts.Use in reassuring contexts; avoid in serious situations where worry is justified.

See it in real clips

Chill out
Don't worry

Frequently asked questions: Chill out vs Don't worry

What's the difference between Chill out and Don't worry?

Chill out: Calm down and relax. Don't worry: A way to tell someone not to be anxious.

Which is more formal: Chill out and Don't worry?

Don't worry is the most formal of these.

Can you show an example of each?

Chill out: You need to chill out and stop worrying so much about the exam. Don't worry: You'll be fine on your exam, so just don't worry.

Can I use Chill out and Don't worry interchangeably?

Not always. Chill out and Don't worry 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