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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
Unadapted borrowing from Italian bolgia (“ditch, trench”), from Old French bolge, bouge, from Late Latin bulga (“wallet, purse”), from Gaulish bolgā, from Proto-Celtic *bolgos (“sack, bag”), ultimately from Proto-Indo-European *bʰelǵʰ- (“to swell”). Doublet of budge and bulge.
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Classic usage
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