unpredictable

adjective

un·pre·dict·able ˌən-pri-ˈdik-tə-bəl

Synonyms of unpredictable

: not predictable: such as

: not able to be known or declared in advance

unpredictable weather

: tending to behave in ways that cannot be predicted

an unpredictable boss

unpredictably

ˌən-pri-ˈdik-tə-blē

adverb

changes that occur unpredictably

unpredictability

ˌən-pri-ˌdik-tə-ˈbi-lə-tē

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.

With an anti-Trump wave predicted for Connecticut, Democrats are projecting potentially increasing their margin to a range of 106 to 110 seats, depending on what happens in close, unpredictable races. — Christopher Keating, Hartford Courant, 29 Oct. 2026 With unpredictable subpolar gales and zero heavy manufacturing on the island, a conventional build would have dragged out across four or five years. — Liam Hess, Vogue, 29 Oct. 2026 Rashida Jones and Will McCormack wrote the screenplay for the film that follows two couples at a dinner party that turns into an unpredictable evening exposing messy relationships and desires. — Beatrice Verhoeven, HollywoodReporter, 28 Oct. 2026 The Serbian leader had long been seen as an unpredictable annoyance, and his balancing act wasn’t particularly subtle. — Brady Knox, The Washington Examiner, 27 Oct. 2026 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

See more words from the same year

Browse Nearby Words

unpredictability

unpredictable

unpredicted

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Cite this Entry

Style

“Unpredictable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unpredictable. Accessed 1 Nov. 2026.

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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

unpredictable

adjective

Synonyms of unpredictable

Examples of unpredictable in a Sentence

Word History

Browse Nearby Words

Cite this Entry

Kids Definition

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unpredictable

adjective

Synonyms of unpredictable

Examples of unpredictable in a Sentence

Word History

Rhymes for unpredictable

Browse Nearby Words

Cite this Entry

Kids Definition

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