jet lag
2 synonyms for jet lag, grouped by meaning and by how common each one is.
Noun — The tiredness, disturbed sleep, and general disorientation felt after flying quickly across several time zones, caused by the body's internal clock being out of step with local time.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
desynchronosis
time-zone fatigue
How to use jet lag
The word patterns that sound natural to a native speaker.
bad jet lag
beat jet lag
get over jet lag
jet-lagged
suffering from jet lag
Neutral and universal. Usually two words in British English, sometimes hyphenated as an adjective (jet-lagged).
Etymology
A compound of jet, the aircraft, and lag, meaning a delay — the body's clock lagging behind local time after fast air travel.
Full origin of jet lag →Frequently asked questions
What is the difference between jet lag and travel fatigue?
Travel fatigue is plain exhaustion from the journey itself — cramped seats, dry air, broken sleep — and it clears after a good night's rest. Jet lag comes specifically from crossing time zones and lasts until your body clock resets, typically about a day per time zone.
Why is jet lag worse flying east?
Flying east shortens your day and asks your body clock to run ahead, which it resists. Flying west lengthens the day, and most people's internal clock naturally drifts slightly longer than 24 hours, so it adapts more easily.
How long does jet lag last?
A common rule of thumb is roughly one day of recovery per time zone crossed, though it varies by person, direction of travel and how much daylight you get on arrival. Morning light after an eastward flight speeds the reset.
