un·​pre·​dict·​able | \ ˌən-pri-ˈdik-tə-bəl How to pronounce unpredictable (audio) \

Definition of unpredictable

: not predictable: such as
a : not able to be known or declared in advance unpredictable weather
b : tending to behave in ways that cannot be predicted an unpredictable boss

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Other Words from unpredictable

unpredictably \ ˌən-​pri-​ˈdik-​tə-​blē How to pronounce unpredictably (audio) \ adverb
changes that occur unpredictably
unpredictability \ ˌən-​pri-​ˌdik-​tə-​ˈbi-​lə-​tē How to pronounce unpredictability (audio) \ noun
the unpredictability of the weather

Examples of unpredictable in a Sentence

Recent Examples on the Web It’s also, at various points, unpredictable and eerie in wholly satisfying ways. Rachel Epstein, Marie Claire, "'Plain Bad Heroines' Is a Great Spooky Read for Winter," 1 Dec. 2020 The unpredictable destruction of a hurricane and likely interruption of services and regular commerce make the panic a little more understandable. Star Tribune, "Let's stop hoarding toilet paper, America," 30 Nov. 2020 The unpredictable results are especially routine late in the season where teams are playing with the most pressure or have nothing to lose. USA TODAY, "Bold predictions for Week 13 in college football," 28 Nov. 2020 Peterson is committed to Wisconsin for football, and does not plan to play to play this season, a decision being made by many of the area’s top football recruits during an unpredictable 2020-21 school year. Matt Goul, cleveland, "Who is No. 1? Presenting the 2020-21 cleveland.com preseason boys basketball Top 25," 27 Nov. 2020 Being misunderstood or unpredictable was a recurring element of Zappa’s mystique. Will Coviello, NOLA.com, "'Zappa' examines the strange genius of Frank Zappa," 27 Nov. 2020 The pandemic, however, is proving an unpredictable force. Angela Dewan, CNN, "Trump's loss dealt a blow to global populism. But the movement is still alive and kicking," 27 Nov. 2020 All the emotions lead up to some unpredictable competitions. Giana Han, al, "Auburn-Alabama rivalry transcends Iron Bowl, draws athletics program together," 26 Nov. 2020 The jockeying among those six teams is going to be heated and unpredictable. Marc Stein, New York Times, "N.B.A. Free Agency Frenzy: 5 Takeaways," 25 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unpredictable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unpredictable

1840, in the meaning defined above

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Time Traveler for unpredictable

Time Traveler

The first known use of unpredictable was in 1840

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Statistics for unpredictable

Last Updated

3 Dec 2020

Cite this Entry

“Unpredictable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unpredictable. Accessed 5 Dec. 2020.

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More Definitions for unpredictable


How to pronounce unpredictable (audio)

English Language Learners Definition of unpredictable

: not capable of being known before happening or being done
: not always behaving in a way that is expected


un·​pre·​dict·​able | \ ˌən-pri-ˈdik-tə-bəl \

Kids Definition of unpredictable

: impossible to predict The king was a completely unpredictable tyrant.— Brian Jacques, Redwall

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