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English definition of “uncertain”

uncertain

adjective [not gradable]  /ʌnˈsɜr·tən/ us  
unclear, or not sure: She faces an uncertain future. We’re uncertain of the cause of death.
uncertainty
noun [C/U]  /ʌnˈsɜr·tən·ti/ us  
[U] They live in uncertainty and confusion.
(Definition of uncertain from the Cambridge Academic Content Dictionary © Cambridge University Press)
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