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English definition of “certainty”

certainty

noun  /ˈsɜr·tən·ti/ us  

certainty noun (SURE KNOWLEDGE)

[U] the sure knowledge that something is true: Can you say with absolute certainty that this is the man you saw?

certainty noun (CERTAIN EVENT)

[C] something that has no possibility of any other result; something that you know will happen in a particular way: There are few certainties in life.
(Definition of certainty from the Cambridge Academic Content Dictionary © Cambridge University Press)
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