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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Borrowed from Late Latin occlūsiō, occlūsiōnis (“occluding, obstruction”), from the Classical Latin occlūdō (“to shut up or close up; to restrain”), from ob + claudō (“to shut or close”).
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tap / space
Classic usage
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