IPA: //ˈdʒɛt.læɡ//
KK: /ˈdʒɛtˌlæɡ/
A condition that occurs when a person travels across multiple time zones, causing fatigue and disorientation due to the body's internal clock being out of sync with the local time.
After flying from New York to Tokyo, I experienced severe jetlag and struggled to stay awake during the day.
Jetlag → The word is formed from "jet" (referring to a jet aircraft, derived from the word "jet" meaning a type of aircraft) and "lag" (from Old Norse "lag", meaning to fall behind). Jetlag describes the condition of feeling tired or disoriented due to falling behind in time after traveling by jet aircraft across time zones.
Think of traveling by a 'jet' aircraft and feeling 'behind' due to time differences — that's what jetlag means.
No commonly confused words.