There are several synonyms for the word "exploder," including detonator, explosion starter, bomb igniter, incendiary trigger, and explosive device activator. Each of these words refers to something or someone that causes an explosion, whether intentionally or not. While these synonyms may be used interchangeably in certain contexts, they each have their own nuances and connotations. For instance, a detonator is typically associated with controlled explosions, whereas an incendiary trigger suggests a more chaotic or destructive explosion. Regardless of the specific word used, they all convey the idea of something or someone that sets off a powerful blast.