: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Turning off water before leaving home prevents these worst-case scenarios. Kait Hanson, Southern Living, 27 Sep. 2025 The resulting plume tool shows pollution traveling across urban areas on typical days with prevailing conditions, and also on a worst-case scenario day with the most people exposed. Andrew Freedman, CNN Money, 24 Sep. 2025 However, a sports doctor has weighed in with a best and worst-case scenario for Lamb moving forward. Evan Massey, MSNBC Newsweek, 22 Sep. 2025 The ambiguity was enough to trigger a worst-case interpretation inside boardrooms and across living rooms from Bengaluru to London. Matteo Moschella, NBC news, 21 Sep. 2025 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 29 Sep. 2025.

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