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
| Idioms: lose sleep over |
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 | sleep (Idiom) |
| lose (Idiom) |
| Panurgy NY Metro, L.L.C. (Private Company) |
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Copyrights:
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 | Idioms. The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Company. All rights reserved. Read more |
Related answers
- Can you have a sleep over?
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Answer these
- Lose sleep over it?
- Don't lose any sleep over it?
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