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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle French stupéfaction, from Latin stupefaciō (“strike dumb, stun with amazement, stupefy”), from stupeō (“to be stunned, speechless”) (English stupid, stupor) + faciō (“to do, make”).
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Classic usage
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