knowledge (n.): “early 12c., cnawlece ‘acknowledgment of a superior, honor, worship;’ for first element see know (v.). The second element is obscure, perhaps from Scandinavian and cognate with the -lock ‘action, process,’ found in wedlock” (HARPER 2001-2021). know (v.): “Old English cnawan (class VII strong verb; past tense cneow, past participle cnawen), ‘perceive a thing…
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