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supermax

British  
/ ˈsuːpəˌmæks /

noun

  1. 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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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

Despite being eligible for a $1.4 million supermax contract after her core designation, Plum chose to sign at a lower number, giving the Sparks flexibility to build around her.

From Los Angeles Times May 8, 2026

The 68-year-old "El Chapo" is serving a life sentence at a supermax federal prison in Colorado following his 2016 arrest and 2019 conviction.

From Barron's Nov. 28, 2025

Criticism of the deportation of the Venezuelans to the supermax prison has been growing not just in the US and in their homeland but also in El Salvador.

From BBC Mar. 27, 2025

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

From "Newjack: Guarding Sing Sing" by Ted Conover

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