The antonyms for the word "successives" can be varied based on the context. For instance, if "successives" means following in a sequence or progression, then the antonyms could be "random," "discontinuous," or "irregular." On the other hand, if we are referring to a series of people or events that occur one after the other, the antonyms could be "predecessors," "previous," or "former." Additionally, if the word "successives" represents a set of individuals working towards a common goal, the antonyms could be "opponents," "enemies," or "rivals." Overall, the antonyms for "successives" would depend on the specific meaning and usage of the term in a given context.