Revolter is a word that is commonly used to describe someone who rebels against authority or breaks away from conformity. However, there are several other synonyms that can be used to describe such individuals. Some of these include rebel, insurrectionist, dissident, insurgent, mutineer, renegade, and non-conformist among others.
Each of these words carries its own unique connotation and can be used to describe different types of rebels. A rebel may be someone who opposes a particular political or social system, while a mutineer may be someone who goes against their own group or team. Similarly, a non-conformist may be someone who simply refuses to follow traditional or mainstream ideas and practices.
Ultimately, the choice of synonym will depend on the specific context and meaning that the speaker or writer intends to convey.