The term "dumdum bullet" is often used to refer to a type of expanding bullet that has a hollow point. This particular type of ammunition is designed to mushroom upon impact, causing a greater degree of damage to the target area. However, the term "dumdum" is often considered outdated and offensive. Alternative synonyms for this type of bullet include hollow point bullet, expanding bullet, or soft point bullet. While each of these terms describes the same type of ammunition, they are more commonly used in modern conversation and are less likely to offend or cause confusion.