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Classic usage
Reading level: medium
Estimated CEFR level: A2 — Elementary
Estimated from word frequency; not an official CEFR classification.
From Middle English sodeyn, sodain, from Anglo-Norman sodein, from Old French sodain, subdain (“immediate, sudden”), from Vulgar Latin *subitānus (“sudden”), from Latin subitāneus (“sudden”), from subitus (“sudden", literally, "that which has come stealthily”), originally the past participle of subīre (“to come or go stealthily”), from sub (“under”) + īre (“go”). Doublet of subitaneous. Displaced native Old English fǣrlīċ.
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Classic usage
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