There are several synonyms for the word "usurial," which means relating to or involving usurpation or wrongful acquisition. Some of the synonyms of this word include "illicit," "unauthorized," "wrongful," "unlawful," "illegal," and "unjust." These words are often used to describe actions that are carried out without the consent of rightful owners or authorities, and typically involve taking over something that does not belong to the one performing those actions. In short, words like "illicit," "unauthorized," and "illegal" express the idea of wrongfully taking power or resources from someone else. By using these synonyms, writers can avoid repetition and add precision to their language.