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Classic usage
Reading level: hard
Estimated CEFR level: B2 — Upper-Intermediate
Estimated from word frequency; not an official CEFR classification.
From Middle English celing (“paneling; (bed) cover or hanging”), from celen (“to cover or panel walls”) (from Old French celer (“to conceal”)) + -ing (gerund-forming suffix). By surface analysis, ceil + -ing.
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Classic usage
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