Gentillement or "Gentiment" ?

Question

I was writing a paragraph, then I stopped when I tried to write this word first I wrote "gentiment" then I felt that it can be wrong because the word is "gentil" so it must be "gentillement" I was surprised that the autocorrecteur didn't correct any, just like both of them are correct.

Answer 1

"Gentillement" is correct but it is in old French. Today, we to write "gentiment". "Gentillement" is not used since centuries ago, in is both forms "gentillement" and "gentilment".