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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Uncertain; possibly from the English slang term chat (“louse”). The word predates the chadless punch, which therefore cannot be its origin, and a derivation from Scots chad (“river gravel”) stated in some dictionaries is now thought to be nothing more than guesswork.
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tap / space
Classic usage
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