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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From deaf + -en (verbal suffix), compare Middle English deven, deaven (“to make deaf”), Old English ādēafian (“to deafen”), Dutch verdoven (“to stupefy, deafen”), German betäuben (“to stun, stupefy, deafen”).
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Classic usage
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