: being, relating to, or based on a projection of future events that assumes only the best possible circumstances
a best-case scenario

Examples of best-case in a Sentence

Recent Examples on the Web
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Look no further than the near-certain demise—even under best-case warming scenarios—of basically all of the world’s warm-water coral reefs and their various colorful fish. John Reid, The Atlantic, 14 May 2026 And this year’s postseason play from both Benson and Stankoven is pushing them closer to their respective best-case scenarios. Shayna Goldman, New York Times, 14 May 2026 In a best-case scenario, a full-fledged MLS team could come later. P.r. Lockhart, Hartford Courant, 9 May 2026 That could mean that, even in a best-case scenario, DUNE won’t determine the mass ordering of neutrinos until 2034—and any answer to the question of matter-antimatter imbalance wouldn’t arrive until the end of that decade. Joseph Howlett, Scientific American, 8 May 2026 See All Example Sentences for best-case

Word History

First Known Use

1972, in the meaning defined above

Time Traveler
The first known use of best-case was in 1972

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Cite this Entry

“Best-case.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/best-case. Accessed 20 May. 2026.

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