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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English slouthe, slewthe, from Old English slǣwþ (“sloth, indolence, laziness, inertness, torpor”), from Proto-Germanic *slaiwiþō (“slowness, lateness”), equivalent to slow + -th. Cognate with Scots sleuth (“sloth, slowness”).
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Classic usage
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