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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
PIE word *dwóh₁ From Middle English twofold, from Old English twēofeald. Equivalent to two + -fold; cognate to Icelandic tvöfalt and Dutch tweevoudig.
double, dual, two-fold, treble, threefold, three-fold
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Classic usage
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