A variant or archaic form related to apprentice; one who is learning a trade (extremely rare).
From Old French aprendre (to learn). This is an obsolete variant of 'apprentice' that never solidified in English. The standard form apprentice eventually dominated, making this form purely historical.
Medieval spelling was so chaotic that 'apprense' and 'apprentice' could be the same word depending on the scribe's mood—it's like how different people today spell 'ketchup' and 'catsup'!
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