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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Spanish cuarterón (“¾ white, a child of a European and a mestizo”), from cuarto (“one-fourth”) + -on (“-oon: forming related nouns”), from Latin quartus (“one-fourth”). Doublet of cuarteron.
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Classic usage
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