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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 clovere, claver, from Old English clāfre, earlier clǣfre, from Proto-West Germanic *klaibrā. Cognate with Saterland Frisian Kleeuwer, Low German Klaver, Klever, Dutch klaver, all “clover”. More distantly also related with German Klee.
trefoil
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Classic usage
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