Here are some ways to think about it:
* Not respectable: People might look down on you or your actions.
* Lacking credibility: Others might doubt your words or motives.
* Questionable character: You might be seen as untrustworthy or unethical.
Examples:
* "The disreputable businessman was known for his shady dealings."
* "The disreputable nightclub was a haven for criminals."
* "Her disreputable behavior led to her losing her job."
Essentially, "disreputable" means someone or something that has lost the respect of others due to their questionable or unethical actions.