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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From casual, from Middle French casuel, from Medieval Latin casualitas and Late Latin cāsuālis (“happening by chance”), from Latin cāsus (“event”) (English case), from cadere (“to fall”). Originally meaning “a chance event” (compare casual, as in “casual encounter”), it developed a negative meaning as “an unfortunate event”, especially the loss of a person.
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Classic usage
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