Unkosher is a word that refers to something that is not legitimate or ethical. There are several synonyms that can be used to describe this type of situation. Some of the most common include dishonest, illegal, unethical, improper, wrong, improper, inappropriate, immoral, fraudulent, and illegal. Each of these words carries a slightly different connotation but all refer to something that goes against accepted norms of behavior. When someone engages in unkosher behaviors, it can lead to serious consequences, including legal actions, damaged reputation, and loss of trust. Using these synonyms can help people to accurately convey the severity of unkosher actions and their potential impact.