: 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.
Here’s what ‘worst-case scenario’ looks like The measles resurgence comes at a time when states are also seeing a rise in parents seeking exemptions for vaccines. Michelle Marchante, Miami Herald, 15 Mar. 2025 Turning off water before leaving home prevents these worst-case scenarios. Kait Hanson, Southern Living, 14 Mar. 2025 Develop a vision for the future, considering both worst-case and best-case scenarios. Matthew F. Erskine, Forbes, 13 Mar. 2025 Yardeni Research lowered its best-case S & P 500 target for 2025 by almost 9%, to 6,400 from 7,000, and set its worst-case target at 5,800. Yun Li, CNBC, 13 Mar. 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

Browse Nearby Words

Cite this Entry

“Worst-case.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/worst-case. Accessed 19 Mar. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!