supermax

British

/ ˈsuːpəˌmæks /

noun

having or relating to the very highest levels of security

a supermax jail

"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

Example Sentences

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supermax

The Boston Celtics traded Jaylen Brown, and Victor Wembanyama signed an extension for $50 million less than a supermax to keep his team intact.

From The Wall Street Journal ● Aug. 9, 2026

Political news outlet Axios, citing administration officials, reported that any "supermax" prison complex at the site would have to be built from scratch -- putting the total cost at somewhere around $2 billion.

From Barron's ● Apr. 3, 2026

"Everyone knows it's supermax … very onerous conditions," Archbold told journalists.

From BBC ● Feb. 16, 2026

Colón, who today is Guzmán’s primary lawyer, is one of the few people permitted to visit him in the Colorado supermax prison where he is serving a life sentence.

From Los Angeles Times ● Jun. 20, 2024

A supermax is like a huge SHU, with 100 percent segregation cells.

From "Newjack: Guarding Sing Sing" by Ted Conover

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