Definition of ken noun from the Oxford Advanced Learner's Dictionary

 

ken

 noun
noun
BrE BrE//ken//
 
; NAmE NAmE//ken//
 
 
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Word Origin Old English cennan ‘tell, make known’, of Germanic origin; related to Dutch and German kennen ‘know, be acquainted with’, from an Indo-European root shared by can and know. Current senses of the verb date from Middle English; the noun from the mid 16th cent.Idioms
beyond your ken
 
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(old-fashioned) if something is beyond your ken, you do not know enough about it to be able to understand it