Definition of Dirtbag

Noun: dirtbag
Usage: US

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