Also spelled cognisance
Meanings
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1
noun
Notice or awareness.
Poor Lady Rotheles was really so imprudent on the late occasion of her niece's elopement as to go into a passion, and to utter such a tirade against her, her lord was roused from his habitual, but not natural listlessness, and became, in consequence, master of sentiments and secrets hitherto most commendably concealed from his cognizance.
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2
noun
having knowledge of
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3
noun
range or scope of what is perceived
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4
noun
range of what one can know or understand
Thesaurus
Etymology
From Middle English conysaunce, from Old French conysance (“recognition," later, "knowledge”), from Old French conoissance (“acquaintance, recognition; knowledge, wisdom”), from conoistre (“to know”), from Latin cognōscō (“know”), from con- (“with”) + gnōscō (“know”). By surface analysis, cogniz(e) (a back-formation) + -ance.