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Classic usage
Reading level: hard
Estimated CEFR level: B2 — Upper-Intermediate
Estimated from word frequency; not an official CEFR classification.
From Middle English rekles, reckeles, rekkeles, (also recheles), from Old English rēcelēas (“reckless, careless, negligent”), equivalent to reck + -less. Cognate with West Frisian roekeleas (“reckless”), Dutch roekeloos (“reckless”), German Low German ruuklos (“careless”), German ruchlos (“careless, notorious”).
foolhardy, heady, rash
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Classic usage
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