jet lag

noun

: a condition that is characterized by various psychological and physiological effects (such as fatigue and irritability), occurs following long flight through several time zones, and probably results from disruption of circadian rhythms in the human body
Temporary fatigue, drowsiness, and loss of concentration are typical symptoms of isolated bouts of jet lagJ. Netting
jet-lagged adjective

Examples of jet lag in a Sentence

I had bad jet lag after that last trip overseas.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Overconsumption of alcohol, or conversely, not drinking enough water, can lead to discomfort and prolonged jet lag. Christopher Elliott, USA Today, 17 June 2025 The actress and businesswoman shares her travel mindset, favorite rituals, and why staying calm—even with delays, toddlers, and jet lag—is her secret to wellness on the road. Jordi Lippe-McGraw, Forbes.com, 13 May 2025 That all means a more comfortable experience with less jet lag. Mae Hamilton, Travel + Leisure, 4 June 2025 Williams snapped photos and shared videos on social media of sub-par coffee poured in paper cups, the flasks bordering on empty despite potential jet lag. Asli Pelit, New York Times, 19 May 2025 See All Example Sentences for jet lag

Word History

First Known Use

1965, in the meaning defined above

Time Traveler
The first known use of jet lag was in 1965

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Cite this Entry

“Jet lag.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jet%20lag. Accessed 22 Jun. 2025.

Kids Definition

jet lag

noun
: a condition that is marked by physical and mental symptoms (as tiredness and bad temper) and occurs following a long flight through several time zones

Medical Definition

jet lag

noun
: a condition that is characterized by various psychological and physiological effects (as fatigue and irritability), occurs following long flight through several time zones, and probably results from disruption of circadian rhythms in the human body

called also jet fatigue

jet-lagged adjective

More from Merriam-Webster on jet lag

Last Updated: - Updated example sentences
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