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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From dialectal nug, nog, knog (“a knot, lump, block, a misshapen mass of anything, peg, linchpin”), also found in Scots nug, nugg, nogg (“small block of wood, peg, pin”), of uncertain origin. Probably from earlier *knug, *knugg, *knogg, related to dialectal Norwegian knugg (“knot, knob”), ultimately from Proto-Germanic *knuk- (“to ball up, mass together”), making it further related to English knock and knuckle.
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Classic usage
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