Correct spelling, explanation: the correct spelling, professor, goes back to the Latin noun profiteri (declare), spelled with one f. Another Latin form made of this noun is professor, translated directly to English word of the same spelling. There is no double f in the word, but there is double s, so professor is completely wrong.
Definition of professor:
noun, the highest academic rank
Mr. Green is our philosophy professor. Everybody likes him!
Please send your papers to professor Smith by 18th March.
Incorrect spelling, explanation: proffesor is a misspelling. The correct form is professor and it is often misspelled. Professor comes directly from a Latin word of the same spelling and meaning. This is why this form is correct.
Incorrect spelling
Incorrect spelling
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Professor is the only correct form, you may remember that the abbreviation is Prof. (single f).
What is the trick one can make use in order to tackle these issue?
professor os proffesor?
Ohh it seems that that website ate my first post (it was super long) so I guess I’ll re-write it in the future.
I love your site!