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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From Middle English skemen, skymen, variants of scumen, from Old French escumer (“to remove scum”), from escume (“froth, foam”), from Frankish *skūm (“froth, foam”), from Proto-Germanic *skūmaz (“foam”), from Proto-Indo-European *skew- (“to cover, conceal”). See scum.
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Classic usage
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