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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 sinceritie, from Old French sincerité and Medieval Latin sincēritās; both from Latin sincēritās, from sincērus + -tās. Equivalent to sincere + -ity.
earnestness, seriousness
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Classic usage
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