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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Middle English fervour, from Old French, from Latin fervor (“a boiling or raging heat, heat, vehemence, passion”), from fervere (“to boil, be hot”); see fervent. By surface analysis, Latin ferv- + -or (“abstract noun suffix”).
ardor, ardour, fervour, fervency, fire, fervidness
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Classic usage
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