unknown to

idiom

Definition of unknown to

: without being known about by (someone) Unknown to me, my partner was organizing a surprise party for my birthday.

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unknownst

unknown to

unkosher

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“Unknown to.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unknown%20to. Accessed 27 Oct. 2021.

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