The word "more expulsive" refers to something that is able to expel or force out more strongly than another thing. There are several synonyms that can be used to describe this kind of forceful expulsion. One synonym is "more forceful," indicating that something is able to exert more force than usual. Another synonym is "more powerful," which implies that the expulsion is more intense and impactful. "More vehement" is also a synonym; it emphasizes the strong emotions or intensity behind the expulsion. Finally, "more vehement" suggests that the expulsion is more sudden, rapid, and forceful, making it difficult to resist.