WordNet
disreputable person
n. someone lacking public esteem
Usage examples of "disreputable person".
Whitman is a decidedly disreputable person, based on what he himself has written, presumably about himself.
But just because none of the reputable people would do it, didnt mean that a disreputable person wouldnt do it.
Jadzia was a disreputable person Leeta had maintained contact with for just such occasions.