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Classic usage
Pronunciation: /kəˈluːʒən/
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Dated from the 14th century C.E. as Middle English collusioun, collusion; from Old French collusion, from Latin collusio (“act of colluding”).
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tap / space
Classic usage
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