WordWeb Online

1. A person who is deemed to be despicable or contemptible
   "only a sleazeball would do that";
   - rotter, dirty dog, rat, skunk, stinker, stinkpot, bum [N. Amer], crumb, lowlife, scum bag, so-and-so, git [Brit], ratbag [Brit], scuzz [N. Amer], scumbag, toad, scuzzbag [N. Amer], slimeball, scuzzbucket [N. Amer], slimebag, sleazebag, scuzzball [N. Amer]

Derived forms: sleazeballs

Type of: disagreeable person, unpleasant person