Rakehellish is an adjective that describes someone or something that is wild, reckless, or immoral. When looking for synonyms for the word, one might consider using terms like debauched, dissolute, licentious, or wanton. Other possible options include words such as rakish, dissipated, profligate, or decadent. Each of these words conveys a sense of excess and indulgence, and can be used to describe a person's behavior, a party atmosphere, or the general ethos of a particular time or place. By using these synonyms, one can add emphasis and nuance to their descriptions of wild and reckless behavior.