because he used Ron's damaged wand
Professor Lochart's spell backfired because he made a mistake in the incantation or the casting process. It may have been due to a mispronunciation or misunderstanding of the spell's requirements. Alternatively, there could have been an unforeseen complication or interference in the spell's magical energies.
bang
Professor in French is spelled "professeur."
That is correct.
snape's
If you know the professor has a doctorate, use Dr. Otherwise, spell out "Professor."
Professor Minerva McGonagall
I believe the word you might be asking about is "professor".
The correct spelling is "professor" with one F (a teacher).
The word in English for a teacher or educator is spelled "professor". (Capitalized before a proper name.)
"Waddiwasi"
backfire is the best! rubbish! loosers L
Cars do backfire because of the mechanical failures.