Gadit

byword

Definitions (2)
1nounA person or thing that is a perfect example of a particular quality or characteristic.
Her name became a byword for excellence in the field of science.
The company's dedication to quality has made it a byword in the industry.
His generosity is a byword among his friends.
2nounA word or phrase that is commonly used as a synonym or substitute for something else, often with a negative connotation.
The town became a byword for corruption after the scandal.
His name is a byword for dishonesty in the business world.
The term 'fast food' has become a byword for unhealthy eating.
Word Origin
Language
Old English
Word parts
by (near, secondary) + word (speech, expression)
Originally meant
a secondary or additional word
Background
The term 'byword' has been used since Old English times to refer to a saying or proverb. Over time, it evolved to mean a person or thing that exemplifies a particular quality, often used in a negative context.