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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English castelain, from Old French castelain (compare modern châtelain), from Latin castellanus (“pertaining to a castle, an occupant of a castle, or a governor of a castle”), from castellum castle, citadel, diminutive of castrum fortified place. See castle. By surface analysis, Old French castel + -an and castle + -an. Doublet of Castilian, castellano, castellanus, and chatelain /chatelaine.
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Classic usage
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