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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
First attested in 1664; borrowed from New Latin undulātus, the perfect passive participle of undulō (see -ate (verb-forming suffix)), from an unattested *undula (“small wave”), diminutive of Latin unda (“wave”).
ripple, ruffle, riffle, cockle
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Classic usage
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