big unknown

noun

chiefly US
: the important thing that everyone would like to know
The big unknown is how investors will react.

Examples of big unknown in a Sentence

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The big unknown is whether the virus will change to cause more serious illness in humans, says Michael Osterholm, director of the Center for Infectious Disease Research and Policy at the University of Minnesota. — Bykai Kupferschmidt, science.org, 7 Nov. 2024 One big unknown is President-elect Trump's push to expel undocumented immigrants. — Tim Bajarin, Forbes, 3 Dec. 2024

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“Big unknown.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/big%20unknown. Accessed 23 Mar. 2025.

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