unpredictable

adjective

un·​pre·​dict·​able ˌən-pri-ˈdik-tə-bəl How to pronounce unpredictable (audio)
: 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
unpredictably adverb
changes that occur unpredictably
unpredictability noun
the unpredictability of the weather

Examples of unpredictable in a Sentence

unpredictable spring weather that makes it really hard to know what to wear
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.
But for investors who are wary of the susceptibility of Argos’s sales to the unpredictable nature of the weather, the team is ramping up its efforts to expand its products to include stockless ranges. John Choong, Forbes.com, 1 July 2025 The head of the European Central Bank said inflation has become more unpredictable due to shocks like the COVID-19 pandemic and Russia’s invasion of Ukraine — and that policymakers need to take the possibility of such extreme scenarios into account and communicate them to the public as well. Jim Edwards, Fortune, 1 July 2025 Humanitarian organizations have criticized Israel’s sweeping evacuation orders in the past as being unpredictable and having short deadlines that are virtually impossible for many, including the sick and disabled. Miranda Jeyaretnam, Time, 30 June 2025 In California, fireworks considered dangerous or unpredictable are banned, including sky rockets, bottle rockets, roman candles aerial shells and firecrackers. Rosalio Ahumada, Sacbee.com, 28 June 2025 See All Example Sentences for unpredictable

Word History

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of unpredictable was in 1840

Browse Nearby Words

Cite this Entry

“Unpredictable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unpredictable. Accessed 9 Jul. 2025.

Kids Definition

unpredictable

adjective
un·​pre·​dict·​able
ˌən-pri-ˈdik-tə-bəl
: not predictable
unpredictability
-ˌdik-tə-ˈbil-ət-ē
noun
unpredictably
-ˈdik-tə-blē
adverb

More from Merriam-Webster on unpredictable

Last Updated: - Updated example sentences
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