The crossword solutions for the term SEQUEL TITLE STARTER are SON and SONOF. This term is used to refer to a movie or book that is a sequel to an earlier work. The title of the sequel often begins with the same word as the original title, such as 'SON of the Mask' being the sequel to 'The Mask'. The two solutions, SON and SONOF, are both related to this concept, as they can be used to start a title for a sequel.