X factor

noun

: a circumstance, quality, or person that has a strong but unpredictable influence

Examples of X factor 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.
Every team faces difficult decisions this time of year, but this trade deadline has some X factors that go beyond the usual player evaluations and roster analysis. Chad Jennings, New York Times, 30 July 2025 The X factor: 35 percent With the Big Ten and SEC at loggerheads over the format, don’t discount the potential for a compromise. Jon Wilner, Mercury News, 11 July 2025 But that’s predicated on an enhanced valuation for the Streaming & Studios entity, and right now the size of such a lift is still an X factor. Todd Spangler, Variety, 11 June 2025 In Canada, Trump is ‘X factor’ for voters Red, white and no blue. Rebecca Morin, USA Today, 29 Apr. 2025 See All Example Sentences for X factor

Word History

First Known Use

1930, in the meaning defined above

Time Traveler
The first known use of X factor was in 1930

Browse Nearby Words

Cite this Entry

“X factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/X%20factor. Accessed 5 Aug. 2025.

Last Updated: - Updated example sentences
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