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 lag …

—J. Netting

jet-lagged

ˈjet-ˌlagd 

adjective

Examples of jet lag in a Sentence

I had bad jet lag after that last trip overseas.

Recent Examples on the Web

An extra day at home is especially helpful if your trip involves jet lag, Preston adds. —Jamie Friedlander Serrano, TIME, 12 June 2024

Although some coach seats are certainly more comfortable than others, on the whole, airline seats at the back of the plane are only getting smaller, with less recline and shorter legroom, nearly guaranteeing a bad case of jet lag upon arrival. —Jessica Puckett, Condé Nast Traveler, 12 June 2024

Of course, passengers aren’t the only ones who struggle with jet lag. —Kelsey Mulvey, Sunset Magazine, 12 June 2024

That might sound like the blurb in a Caribbean island travel brochure, but save yourself the air miles and jet lag, because it can all be found just a short hop from mainland Cornwall. —Julia O'Driscoll, The Week Uk, theweek, 11 June 2024

Word History

First Known Use

1965, in the meaning defined above

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

ˈjet-ˌlag 

: 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