Is fictitional a real English word in a dictionaryalready?

Yes. Fictional is an adjective, as in fictional character.

Fictional, yes. Fictitious, yes. The WikiAnswers spell check recognizes them, but it reads fictitional as a misspelling.

Sorry for the first answer; I didn't properly read the Word with the additional 'it' as you spelled it. No, "fictitional" is not a Word. If it were, it would probably have the same meaning as fictional.