Origin Story
The word sideburns hides a delightful backstory. Ambrose Burnside, a general of the American Civil War, was famous less for his battlefield skill than for his striking facial hair. His whiskers swept lavishly from both cheeks all the way to his mustache — a shape no one else could quite pull off. People named the style after his surname: burnsides. But over time, as the fact that the hair grew on the "side" of the face came to the fore, the two halves of the word quietly swapped places. Burnside became sideburns. It is a rare case of a general's name being flipped end to end to make a brand-new word.
When the parts of a word switch order like this, linguists call it metathesis. Here, people found the meaning ("side") more intuitive up front, and so the order naturally rearranged itself.
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Online Etymology Dictionarysideburns (n.): 1887, alteration of burnsides (1875), in reference to U.S. Army Gen. Ambrose Everett Burnside (1824-1881), who wore conspicuous side whiskers
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Oxford English Dictionarysideburns: alteration of burnsides, after General A. E. Burnside, by association with side
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Merriam-Webster Dictionaryalteration of burnsides, after Ambrose E. Burnside, American general
Word Evolution
Words from the Same Root
Memory Hook
sideburns is General Burnside's name flipped around. Remember it as "Burnside's whiskers on the side of the face."
""A general's name was flipped end to end, and became the word for the hair on the side of the face.""
