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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Borrowed from Spanish castellano (“Castilian”), from Medieval Latin Castella (“Castile, Land of Fortresses”) + -ānus (“-an: forming adjectives”), from Latin castrum (“fort”) + -ella (“-elle: forming diminutives”). Doublet of Castilian, castellanus, castellan, and chatelain.
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Classic usage
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