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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English [Term?], from Old Norse daufr (“deaf”) (whence also Icelandic daufur (“deaf, dull”)), from Proto-Germanic *daubaz (“deaf”), from Proto-Indo-European *dʰūbʰ-, *dʰūp- (“to smoke”). Doublet of daff, deaf, and dof. Compare dove ("to slumber"). More at deaf.
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Classic usage
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