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Classic usage
Reading level: hard
Estimated CEFR level: B2 — Upper-Intermediate
Estimated from word frequency; not an official CEFR classification.
Recorded since 1297 as Middle English caucioun (“bail, guarantee, pledge”), from Old French caution (“security, surety”), itself from Latin cautiō, from cautus, past participle of caveō, cavēre (“be on one's guard”).
cautiousness, carefulness
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Classic usage
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