A need or necessity; something required or essential (archaic or obsolete).
From Old French 'besoin,' meaning need or necessity, derived from Vulgar Latin 'bis' (twice) + 'sonia' (sound/cry), originally meaning 'to have a crying need.' The word entered Middle English but fell out of common use.
French 'besoin' (still used today for 'need') shows how some English words quietly emigrated back to their Norman origins while keeping Medieval relatives—it's a linguistic time capsule of 1066's impact on English vocabulary.
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