When it comes to describing someone who has a poor reputation or is deemed unworthy of respect, there are many synonyms for the phrase "be disreputable." Some examples of such synonyms include being infamous, notorious, shoddy, corrupt, disreputable, shady, and sleazy. Each of these words carries a slightly different connotation but can all be used to describe someone or something that is known for unsavory behavior or a negative reputation. Ultimately, the choice of which synonym to use will depend on the specific context and the severity of the situation being described.