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English definition of “certain”

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certain

adjective
 
/ˈsɜr·tən/
B1 definite: I am certain that you’re doing the right thing. It now looks certain that she is going to resign. →  Opposite uncertain
B1 some: The museum is only open at certain times of the day.
(Definition of certain from the Websters Essential Mini Dictionary © Cambridge University Press)
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