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Synonyms

unpredictable

American  
[uhn-pri-dik-tuh-buhl] / ˌʌn prɪˈdɪk tə bəl /

adjective

  1. not predictable; not to be foreseen or foretold.

    an unpredictable occurrence.

    Synonyms:
    uncertain, variable, fitful, erratic

noun

  1. something that is unpredictable.

    the unpredictables of life.

unpredictable British  
/ ˌʌnprɪˈdɪktəbəl /

adjective

  1. not capable of being predicted; changeable

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • unpredictability noun
  • unpredictableness noun
  • unpredictably adverb

Etymology

Origin of unpredictable

First recorded in 1855–60; un- 1 + predictable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Electronics companies have been grappling with frequent, unpredictable strategy shifts when it comes to US tariffs, he said.

From Barron's

Proximity to Los Angeles means Mt Baldy attracts experienced and inexperienced climbers, and authorities urged people to stay off the mountain, especially during such unpredictable winter weather.

From BBC

Back at the children's centre, the soon-to-be parents are aware of the unpredictable nature of parenting.

From BBC

Tax policy changes constantly, and lawmakers’ priorities can shift in unpredictable ways.

From MarketWatch

China is now too large to ignore as an audience, yet it’s too unpredictable to anchor a global business model.

From MarketWatch