to not lose (any) sleep over somebody or something

英語での「not lose (any) sleep over somebody or something 」の定義と意味

to not lose (any) sleep over somebody or something
01

to not be upset or concerned about someone or something at all

to {not} [lose] (any|) sleep (over|about) {sb/sth} definition and meaning
IdiomIdiom
InformalInformal
example
I'm disappointed about their decision, but I'm not losing any sleep over it.
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