Brand X
Americannoun
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(in advertising) a competing brand or product not referred to by name but implied to be of inferior quality.
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an unknown or little-known brand name or a product bearing it.
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any item that one chooses not to refer to by name, especially when used as a basis of comparison.
Etymology
Origin of Brand X
First recorded in 1965–70
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.
