for all one knows

idiom

Definition of for all one knows

informal
used to say that one has little or no knowledge of somethingFor all I know, he left last night.She may have already accepted another job, for all we know.

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“For all one knows.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/for%20all%20one%20knows. Accessed 24 Sep. 2020.

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