sleep debt

American  

[sleep det] / ˈslip ˌdɛt /

noun

1. the difference between the amount of sleep a person needs and the actual amount of time spent sleeping, when the amount needed exceeds the time slept.

   The cumulative effect of sleep debt—over days, weeks, or longer—can be linked to a number of physical, emotional, and cognitive impairments.

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Etymology

Origin of sleep debt

First recorded in 1930–35

Example Sentences

Many U.S. teens accumulate sleep debt during the school week as they juggle academic demands, social activities, extracurricular commitments, and in many cases part-time jobs.

From Science Daily

The benefits of napping are strongest for people who have sleep debt, meaning they don’t get enough nighttime sleep.

From Scientific American

“The sleep debt collectors are coming,” Oliver Whang wrote in The Times last year.

From New York Times

“I need to sleep well tonight, too. There’s a lot more sleep debt.”

From Washington Times

Alex's sleep debt quickly accumulated and began to affect her mental health as she blamed herself for not getting her son to sleep the way the courses said he would, or could.

From Salon