Chill out vs Don't worry about that vs Relax

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

Chill out

InformalTop 2,000 (common)

Don't worry about that

Beyond 10,000 (less common)

Relax

Top 1,000 (very common)A1verb
Most common: Relax
 Chill outDon't worry about thatRelax
Pronunciation🇬🇧 //tʃɪl aʊt//🇺🇸 //tʃɪl aʊt//🇬🇧 //dəʊnt ˈwʌri əˈbaʊt ðæt//🇺🇸 //doʊnt ˈwɜri əˈbaʊt ðæt//🇬🇧 /["/rɪˈlæks/","/rɪˈlæksɪz/","/rɪˈlækst/","/rɪˈlæksɪŋ/"]/🇺🇸 /["/rɪˈlæks/","/rɪˈlæksɪz/","/rɪˈlækst/","/rɪˈlæksɪŋ/"]/
MeaningCalm down and relax.Don't be concerned about that.To make yourself feel calm and not stressed.
ExampleYou need to chill out and stop worrying so much about the exam.Don't worry about that; everything will be fine.After a long day at work, I like to relax on the couch with a good book.
RegisterInformalNeutralNeutral
How commonTop 2,000 (common)Beyond 10,000 (less common)Top 1,000 (very common)
CEFR level--A1
Part of speechverb
Collocationschill out time, chill out period, chill out zoneworry about something, don't worry, stop worrying, worry too muchcompletely, fully, totally, begin to, try to, learn to, against, into, on, lie back and relax, sit back and relax, relax and enjoy something/​yourself, completely, fully, totally, begin to, try to, learn to, against, into, on, lie back and relax, sit back and relax, relax and enjoy something/​yourself, completely, fully, totally, begin to, try to, learn to, against, into, on, lie back and relax, sit back and relax, relax and enjoy something/​yourself
Antonyms--stress, tense, worry
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.Using 'worry' with a subject (e.g., 'Don't you worry about that')., Confusing with 'Don't worry for that'., Overusing in formal emails where 'Please don't concern yourself' might be better.'Relax' is sometimes confused with 'release' as if both mean the same thing., Learners may forget to use an object, saying just 'I relax' instead of 'I relax myself'., Some might use 'relax' inappropriately with a negative tone, which can sound confusing.
Usage notesUse 'chill out' in casual conversations to suggest someone should relax. Avoid in formal contexts.Commonly used to reassure someone. Suitable for both casual and formal contexts but may be too informal for very serious situations.Use 'relax' when talking about making oneself calm. It's suitable for most contexts, but avoid using it in very formal occasions.

See it in real clips

Chill out
Don't worry about that
Relax

Frequently asked questions: Chill out vs Don't worry about that vs Relax

What's the difference between Chill out, Don't worry about that, and Relax?

Chill out: Calm down and relax. Don't worry about that: Don't be concerned about that. Relax: To make yourself feel calm and not stressed.

Which is more common: Chill out, Don't worry about that, and Relax?

Relax is the most common in everyday English.

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 about that: Don't worry about that; everything will be fine. Relax: After a long day at work, I like to relax on the couch with a good book.

Can I use Chill out, Don't worry about that, and Relax interchangeably?

Not always. Chill out, Don't worry about that, and Relax 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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