lose sleep over, to(redirected from to lose sleep over)
lose sleep over someone or somethingand lose sleep about someone or something
Fig. to worry about someone or something a lot, sometimes when one should be sleeping. (Often used with any and the negative.) Yes, Kelly is in a little bit of trouble, but I'm not going to lose any sleep over her. Don't lose any sleep over the matter. I refuse to lose sleep about it.
lose sleep over
Worry about, as in It's too bad the experiment failed, but I'm not going to lose sleep over it. This expression, often put negatively, alludes to actual insomnia caused by anxiety. [First half of 1900s]
lose sleep over, to
To worry about. This expression, often used negatively—that is, something not to lose sleep over, dates from the mid-twentieth century. The novelist Norman Mailer used it in Advertisements for Myself (1959), “It’s not the sort of thing I lose sleep over.”