unpredictable

[uhn-pri-dik-tuh-buhl]

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

/ ˌʌnprɪˈdɪktəbəl /

adjective

1. not capable of being predicted; changeable

Other Word Forms

• unpredictability noun
• unpredictableness noun
• unpredictably adverb

Word History and Origins

Origin of unpredictable¹

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

Example Sentences

Rain arrived at Hagley Oval just after an unbeaten 49 from Sam Curran had lifted England to a competitive score off 20 overs on an unpredictable pitch.

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Although she's unable to take her test at the moment because of the unpredictable nature of her condition, she's glad it has entertained and informed.

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He recalls how, early on, others in the business encouraged him to prepare for the slow or uncertain periods that come with Hollywood’s unpredictable job market.

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Anything can happen at the waterfront Phillip Island circuit, where riders are at the whim of often unpredictable weather, and sometimes wildlife, on a demanding track.

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"It would have been difficult to have information in advance about this situation, unlike what happens with hurricanes," she said, citing a combination of unpredictable meteorological factors.

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Related Words

• erratic 
• fickle 
• uncertain 
• unreliable 
• unstable