Finding synonyms for the word immoralistic can be tricky, as there are several nuanced interpretations of the term. Some possible synonyms include: amoral, unethical, unprincipled, corrupt, depraved, wicked, wrongful, sinful, and unscrupulous. However, each of these words may have slightly different connotations or shades of meaning. For example, while amoral refers to a lack of moral principles, unethical suggests a deviation from accepted standards of behavior. Similarly, while wicked may convey a sense of malice or evil, unscrupulous suggests a lack of ethical restraint. Ultimately, the most appropriate synonym for immoralistic will depend on the context in which it is used and the intended tone and implications of the term.