Jeep

In the late 1930s the United States Army asked automobile manufacturers to design a small, lightweight reconnaissance vehicle that could handle rough terrain. Willys-Overland, Ford and Bantam all submitted prototypes, and the resulting vehicle — low, boxy, four-wheel-drive and astonishingly versatile — became one of the most recognised machines of the Second World War. Soldiers needed a name for it, and the one that stuck was "jeep."

The most widely accepted explanation traces the word to the military designation GP, short for "General Purpose" vehicle. Spoken quickly, "G.P." slurs into something very close to "jeep," and soldiers had a long tradition of turning abbreviations into nicknames. The vehicle was general purpose in the fullest sense: it carried troops, towed guns, served as an ambulance, ferried officers and splashed through rivers, so the label fit.

But there is a second thread. In E. C. Segar's Popeye comic strip, a small, round animal called Eugene the Jeep appeared in 1936 — a creature that could go anywhere and do almost anything. Soldiers, many of whom had grown up reading the strip, already used "jeep" as slang for an untested vehicle or a new recruit. When the nimble GP arrived and proved it really could go anywhere, the cartoon name and the military abbreviation fused into a single, irresistible word.

After the war, Willys-Overland trademarked "Jeep" and began selling civilian versions, turning a piece of army slang into one of the most famous brand names in automotive history. Today the word is used generically for any rugged off-road vehicle — a journey from wartime shorthand and a Popeye character to a fixture of everyday language.