McMansion

British

/ məkˈmænʃən /

noun

informal a large modern house considered to look mass-produced, lacking in distinguishing characteristics, and at variance with established local architecture

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of McMansion

C20: a corruption of McDonald's , a major American fast-food enterprise noted for the ubiquity of its restaurants

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.

After all, the entry point to this parallel universe is a tony study inside a well-appointed McMansion.

From Salon • Oct. 2, 2025

The metastatic growth of the upper-middle-class house has led to a familiar term of art: the McMansion.

From Slate • Mar. 6, 2025

The roughly 3,500-square-foot residence was built in 1948, decades before the McMansion trend — to say nothing of the faux farmhouses that now dot Brentwood.

From Los Angeles Times • Oct. 15, 2024

Why, in death, she decided to give her home away, rather than let it be sold and replaced with a multimillion-dollar McMansion.

From Seattle Times • Oct. 15, 2023

“How can I help you?” he says, like we were about to order a cheeseburger and fries from his McMansion.

From "Dry" by Neal Shusterman and Jarrod Shusterman

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023