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Classic usage
Reading level: hard
Estimated CEFR level: C1 — Advanced
Estimated from word frequency; not an official CEFR classification.
From Middle English unreste, equivalent to un- + rest. Cognate with West Frisian ûnrêst (“unrest”), Dutch onrust (“unrest”), German Low German Unrüst (“unrest”). Compare also Saterland Frisian Uunraue (“unrest”), German Unruhe (“unrest”), Danish uro (“unrest”), Swedish oro (“unrest”), Icelandic órói (“unrest”). Compare also Old English orrest (“battle”), Old Norse orrosta, orresta (“battle”).
agitation, ferment, fermentation, tempestuousness
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Classic usage
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