Debaucherous is a word that describes immoral or hedonistic behaviour. There are several synonyms for this word, including licentious, dissolute, wanton, and decadent. These words all describe behaviour that goes beyond acceptable social norms and can be seen as indulgent or excessive. Other synonyms for debaucherous include promiscuous, lewd, and salacious which refer to behaviour that is sexually suggestive or inappropriate. However, it is important to note that the use of these words can be subjective and may have different connotations depending on the context in which they are used.