: involving, projecting, or providing for the worst possible circumstances or outcome of a given situation
a worst-case scenario

Examples of worst-case in a Sentence

Recent Examples on the Web
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In one of the CDC modeling’s worst-case scenarios, in which only 20 percent of Ebola cases are isolated, most simulations projected more than 20,000 cases and more than 4,000 deaths within just three months. Beth Mole, ArsTechnica, 12 June 2026 Its security analysis assumes a worst-case scenario in which an attacker may possess quantum correlations with the detector itself. Neetika Walter, Interesting Engineering, 9 June 2026 In the months after her diagnosis, Whittingham couldn't stop thinking about worst-case scenarios. Kerry Breen, CBS News, 6 June 2026 Disruptions to the Strait of Hormuz have kept oil markets on edge, even if prices have not yet fully reflected worst-case scenarios. Dylan Butts, CNBC, 3 June 2026 See All Example Sentences for worst-case

Word History

First Known Use

1964, in the meaning defined above

Time Traveler
The first known use of worst-case was in 1964

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Cite this Entry

“Worst-case.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/worst-case. Accessed 17 Jun. 2026.

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