Ranters is a derogatory term used to classify people who talk incessantly or have a proclivity for complaining. There are several synonyms for the word 'ranters' that can be used to express similar sentiments. One such synonym is complainers, which refers to individuals who constantly find fault with everything. Another word that can be used to describe ranters is gripers, which denotes individuals who whine and grouse about trivial issues. Other terms that can be used synonymously with ranters are bellyachers, moaners, whiners, and kvetchers. Regardless of the choice of synonym, all these words signify individuals who tend to express dissatisfaction and negative emotions frequently.