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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From rebracketing of phrases an uncle, mine uncle, thine uncle, etc. Compare neam and naunt. For the verb, OED suggests an evolution in sense "to claim to be one's uncle" > "to cheat". It compares this derivation with cozen, which it derives from cousin. For the technical anthropological sense, compare nibling.
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Classic usage
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