byword
Americannoun
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a word or phrase associated with some person or thing; a characteristic expression, typical greeting, or the like.
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a word or phrase used proverbially; common saying; proverb.
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an object of general reproach, derision, scorn, etc..
His crimes will make him a byword through the ages.
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an epithet, often of scorn.
noun
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a person, place, or thing regarded as a perfect or proverbial example of something
their name is a byword for good service
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an object of scorn or derision
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a common saying; proverb
Etymology
Origin of byword
before 1050; Middle English biworde, Old English biwyrde. See by (adj.), word
Explanation
A byword is an adage or a catchphrase — it's a motto that captures some important principle or meaningful idea. Your family's byword might be "Be kind whenever possible. It is always possible." Like a proverb or an aphorism, a byword condenses an idea that resonates with many people into a short, memorable phrase. If you grandmother is famous for saying, "You catch more flies with honey than with vinegar," you can describe the saying as her favorite byword. In Old English, the word was biword, "proverb," or "household word," a translation of the Latin proverbium.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Copper-rich Zambia, once a byword for sovereign debt distress, heads to the polls Thursday in an election that will test whether President Hakainde Hichilema has convinced voters his economic reforms are paying off.
From Barron's ● Aug. 10, 2026
“Goldilocks” was the byword for the bull market of the past few years, but now the three bears—oil, gold, and the Fed—are on the prowl, and there may be no happy ending.
From Barron's ● Mar. 20, 2026
If Francis had a byword for his papacy, it was “mercy,” which he made the theme of a special jubilee year starting in 2015.
From The Wall Street Journal ● Dec. 23, 2025
The word Bataclan has since become a byword in France for extreme Islamist attacks, in much the same way that 9/11 did in the US.
From BBC ● Nov. 12, 2025
The Lyseni was a sleek, smiling man whose flamboyance was a byword on both sides of the narrow sea.
From "A Clash of Kings" by George R.R. Martin
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
