lose sleep over

1. 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]

Example Sentences

"In the end, I'm not going to lose sleep over it because I ultimately benefited from those antics."

Read more on BBC

As for the social media announcement by Alalshikh, chairman of Riyadh Season, he opted for jungle metaphors rather than corporate speak: “Don’t mess with the lion … 4 fights for Canelo with Riyadh Season … The Deal is done … A Lion doesn’t lose sleep over opinion of a sheep … Fear the lion not the jungle.”

Read more on Los Angeles Times

Mr Tugendhat probably won’t lose sleep over this slip-up – he won’t have personally written the press release, and he’s got 10 of the Scottish Conservatives’ 31 MSPs backing him.

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Very few seemed to lose sleep over the murder of tens of thousands of Chechens in Russia's “counter-insurgency” war of the 2000s, which Human Rights Watch called "unparalleled in the area since World War II for its scope and destructiveness."

Read more on Salon

In other words, if teams sleep on him now, they may lose sleep over him later.

Read more on Seattle Times

Related Words

• agonize 
• bother 
• brood 
• carp 
• chafe 
• fume 
• fuss 
• grieve