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

Other Words from unpredictable

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

Examples of unpredictable in a Sentence

Recent Examples on the Web So some of it was just a reminder that the world is unpredictable that way. James Hibberd, The Hollywood Reporter, 23 Jan. 2022 But service is still unpredictable — MARTA canceled hundreds of bus trips last week, and rail trips have also been canceled. David Wickert, ajc, 21 Jan. 2022 The professional futures of college-age athletes are unpredictable. Andrew Beaton, WSJ, 21 Jan. 2022 The relationship between their conditions results in more complex and difficult-to-treat illness that can be unpredictable. Fortune, 19 Jan. 2022 Going back into production, actor Jacob Elordi, who plays the teen antagonist on HBO's breakout drama, found Nate's next steps to be unpredictable. Marcus Jones, EW.com, 17 Jan. 2022 So far, the eastern and central parts of the nation are seeing the most flu cases, but that could change, as influenza is often unpredictable, Brammer has previously said. NBC News, 14 Jan. 2022 Experts caution these are still early data points for predicting the trajectory of a virus that has repeatedly shown to be unpredictable. Fenit Nirappil Abd Hannah Knowles, Anchorage Daily News, 13 Jan. 2022 Though New England and Massachusetts are experiencing higher temperatures and less snow on the whole due to global warming, studies show that the climate crisis is also stoking more severe and unpredictable downpours. Globe Staff, BostonGlobe.com, 7 Jan. 2022

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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Last Updated

26 Jan 2022

Cite this Entry

“Unpredictable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unpredictable. Accessed 27 Jan. 2022.

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More Definitions for unpredictable



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

More from Merriam-Webster on unpredictable

Nglish: Translation of unpredictable for Spanish Speakers

Britannica English: Translation of unpredictable for Arabic Speakers


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