Means inexperienced or amatuer. Poorly completed or to describe someone's work as clearly showing signs of their own inexperience. Derived from the term 'Novice'.
He is fairly novulent at driving a car, but this is mainly due to novulence, because he is a novice.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi