tap / space
Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From paper + back, a shortening of the older term paper-backed book.
paperback book, paper-back book, softback book, softback, soft-cover book, soft-cover
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tap / space
Classic usage
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Verbault — Brown corpus levels, WordNet definitions, Gutenberg corpus.
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