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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From Middle English stiborne, stibourne, stoburn, stoburne, styburne, stiborn, of uncertain origin; one hypothesis is that it may be from Old English *stybbor, from Old English stybb (“a stump, stub”) + -or (adjective-formation suffix, as in bitor, whence English bitter).
obstinate, unregenerate
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Classic usage
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