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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Latin stygius, from Ancient Greek Στύγιος (Stúgios, “relating to Styx”), from Στύξ (Stúx, “Styx, chief river of underworld”).
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Classic usage
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