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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Borrowed from French serré, past participle of serrer, from Middle French serrer, from Old French serrer, from Vulgar Latin *serrare (“close, shut”), from Late Latin serare (“fasten, bolt”), from Latin sera (“a bar, bolt”), akin to Latin serere (“to join or bind together”). Compare French serrer (“to tighten”) and Spanish cerrar (“to shut, close”).
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Classic usage
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