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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English onfal, onfalle, equivalent to on- + fall. Cognate with Dutch aanval (“an attack, assault”), German Anfall (“an attack, seizure, fit”), Swedish anfall (“an attack, offensive, assault”). Compare also Middle English onfallynge (“an onslaught, attack”).
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Classic usage
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