Its meaning soon broadened, however, to mean “range of vision” or “sight” on land or sea. Ken is also a masculine given name of scottish / scottish gaelic origin See examples of ken used in a sentence.
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In this context, the phrase is infelicitous
' beyond one's ken ', in its ordinary usage, means beyond one's powers of comprehension.
An idea beyond one's ken Range of sight or vision. Kenyatta lee bettis frazier jr (born april 11, 2000), known professionally as ken carson, is an american rapper and record producer from atlanta, georgia
Carson initially gained attention for his soundcloud releases and collaborations with fellow atlanta rapper destroy lonely. Ken in american english (ken) noun a male given name, form of kendall or kenneth Understanding.such a sketch must pass lightly over debatable ground, and must consist largely of suggestions still in need of confirmation But if it serves as a frame into which more precise and more detailed statements may be fitted as they come to the ken of the reader, its object will be attained.
There are six meanings listed in oed's entry for the noun ken, two of which are labelled obsolete
See ‘meaning & use’ for definitions, usage, and quotation evidence.