An unpredictable person is one who is difficult to predict. They are not always calm or rational, and they can be very emotional.

  • He is a very unpredictable person, and it's hard to know what he is going to do next.

  • The weather is unpredictable, and it's hard to predict what is going to happen next.

Definition of unpredictable


not occurring at a regular rate or fixed intervals




not capable of being foretold


unknown in advance

Nearby Words

unpredictable Pronunciation in a video

Example Sentences for unpredictable

  • 1

    The weather is unpredictable.

  • 2

    It means the opposite of unpredictable.

  • 3

    His methods are unpredictable and incalculable.

  • 4

    He is fragile yet unpredictable.

  • 5

    The progression of disease is unpredictable and heterogeneous.

  • 6

    As the result the performance of new arbitrators is unpredictable.

  • 7

    In some cases, the meaning of the cislocative is unpredictable.

  • 8

    Such violence is injurious to the participants and unpredictably dangerous.

  • 9

    The rainfall is unpredictable in tune with the Indian monsoon.

  • 10

    The ultimate results of the election are still unpredictable.