uncertain
adjective
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ambiguous, especially preceded by a negative“The judge spoke in no uncertain terms to the defendant.”
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not established beyond doubt
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lacking or indicating lack of confidence or assurance“They were uncertain of their convictions.”unsureincertain
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not certain to occur
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not consistent or dependable“an uncertain recollection of events”
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not established or confirmedunsealed
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subject to changechangeablefluidunstableunsettled