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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 professor, professour, from Anglo-Norman proffessur and its etymon Latin professor (“declarer, person who claims knowledge”), from the past participle stem of profiteor (“profess”). By surface analysis, profess + -or.
prof
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Classic usage
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