: 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

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That kind of improvement could help avoid a worst-case scenario the Fed has been desperate to avoid, one where expectations for high inflation trigger a vicious cycle of behavior that only worsens inflation. Stan Choe, Los Angeles Times, 23 Jan. 2026 Clear and Transparent Communication When managers don't communicate clearly about what's happening and why, teams fill the gaps with worst-case assumptions. Caroline Castrillon, Forbes.com, 22 Jan. 2026 The Senate’s failure to pass FANFSA, combined with RISAA’s passage, was a worst-case scenario come true for those fighting to preserve some semblance of Fourth Amendment rights for Americans. Patrick Eddington, Oc Register, 22 Jan. 2026 Whatever ultimately happens with tariffs, European leaders should plan for worst-case outcomes, said David Roche, veteran investor from Quantum Strategy. Anniek Bao, CNBC, 22 Jan. 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 31 Jan. 2026.

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