uncertain

play
adjective un·cer·tain \ˌən-ˈsər-tən\

Definition of uncertain

  1. 1 :  indefinite, indeterminate the time of departure is uncertain

  2. 2 :  not certain to occur :  problematical his success was uncertain

  3. 3 :  not reliable :  untrustworthy an uncertain ally

  4. 4a :  not known beyond doubt :  dubious an uncertain claimb :  not having certain knowledge :  doubtful remains uncertain about her plansc :  not clearly identified or defined a fire of uncertain origin

  5. 5 :  not constant :  variable, fitful an uncertain breeze

uncertainly

adverb

uncertainness

play \ˌən-ˈsər-tən-(n)əs\ noun

Examples of uncertain in a sentence

  1. The time of departure is still uncertain.

  2. We are still uncertain of the truth.

  3. She remains uncertain about her plans.

  4. I'm uncertain about how to respond.

  5. The cause of the fire is uncertain.

  6. He has an uncertain temper.

  7. They face a financially uncertain future.

14th Century

First Known Use of uncertain

14th century



UNCERTAIN Defined for English Language Learners

uncertain

play
adjective un·cer·tain \ˌən-ˈsər-tən\

Definition of uncertain for English Language Learners

  • : not exactly known or decided : not definite or fixed

  • : not sure : having some doubt about something

  • : not definitely known


UNCERTAIN Defined for Kids

uncertain

play
adjective un·cer·tain \ˌən-ˈsər-tən\

Definition of uncertain for Students

  1. 1 :  not exactly known or decided on an uncertain amount

  2. 2 :  not sure They were uncertain of the rules.

  3. 3 :  not known for sure an uncertain claim

  4. 4 :  likely to change :  not dependable uncertain weather

uncertainly

adverb


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contemplative of or relative to the past

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