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Meaning of “uncertain” in the English Dictionary

"uncertain" in British English

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uncertainadjective

uk   /ʌnˈsɜː.tən/  us   /ʌnˈsɝː.tən/
B2 not ​knowing what to do or ​believe, or not ​able to ​decide about something: [+ question word] She's uncertain whether to go to New Zealand or not. Ariana was uncertain aboutmeeting him.
B2 not ​known or ​fixed, or not ​completelycertain: These ​refugeesface an uncertain future. The ​politicaloutlook is still uncertain.

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uncertainly
adverb uk   /ʌnˈsɜː.tən.li/  us   /ʌnˈsɝː.tən.li/
(Definition of uncertain from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"uncertain" in American English

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uncertainadjective [not gradable]

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

“uncertain” in American English

There, their and they’re – which one should you use?
There, their and they’re – which one should you use?
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