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Classic usage
Reading level: hard
Estimated CEFR level: B2 — Upper-Intermediate
Estimated from word frequency; not an official CEFR classification.
From Middle English obscure, from Old French obscur, from Latin obscūrus (“dark, dusky, indistinct”), from ob- + *scūrus, from Proto-Italic *skoiros, from Proto-Indo-European *(s)ḱeh₃-. Doublet of oscuro.
befog, becloud, obnubilate, haze over, fog, cloud, mist
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Classic usage
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