How do you spell Professor?
Correct spelling
professor
One F, two S's. PRO + FESSOR.
Why is professor spelled this way?
One F, two S's. From Latin professor, one who publicly declares expertise. The double S comes from the Latin root profiteri.
Common misspellings of professor
proffessorprofesserproffesserprofeser
Example
The professor gave an inspiring lecture.