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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From French hypnagogique, from Ancient Greek ὕπνος (húpnos, “sleep”) + ἀγωγός (agōgós, “leading”).
soporific, soporiferous, somniferous, somnific, hypnogogic
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tap / space
Classic usage
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