lighten up Definition in the Cambridge English Dictionary
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Definition of “lighten up” - English Dictionary

Definition of "lighten up" - American English Dictionary

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lighten up

phrasal verb with lighten  us   /ˈlɑɪ·tən/ verb [T]

lighten up (MAKE NOT SERIOUS)

stop being so ​serious: Why don’t you just ​relax and ​enjoy yourself? Lighten up!
(Definition of lighten up from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "lighten up" - British English Dictionary

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lighten up

informal
phrasal verb with lighten uk   /ˈlaɪ.tən/  us   /-t̬ən/ verb
to ​become more ​relaxed and less ​serious: Oh, ​lighten up! I was only ​joking! I ​wish she'd just ​lighten up.
(Definition of lighten up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Translations of “lighten up”
in Arabic يَبْتَهِج…
in Korean 기운 내…
in Portuguese alegrar-se…
in Catalan alegrar-se, animar-se…
in Japanese 元気づける, 元気になる…
in Chinese (Simplified) 放松,缓和…
in Turkish hafiflemek, rahatlamak, daha az ciddi hâle gelmek…
in Russian успокаиваться, расслабляться…
in Chinese (Traditional) 放鬆,緩和…
in Italian rilassarsi…
in Polish rozchmurzyć się…
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