Meaning of the word "lighten up" in English

What does "lighten up" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

lighten up

US /ˈlaɪ.tən ʌp/
UK /ˈlaɪ.tən ʌp/
"lighten up" picture

Phrasal Verb

1.

to become less serious or more cheerful

Example:
Oh, lighten up! It was just a joke.
You need to lighten up and enjoy life more.
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