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acknow

transitive verb
acknew; acknown; acknowing; acknows

Definition of acknow 

obsolete

: to confess knowledge of

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History and Etymology for acknow

Middle English aknowen, going back to Old English oncnāwan, acnāwan “to know, recognize, admit, confess,” from a-, on-, prefixal use of on on entry 1 + cnāwan “to know entry 1”

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