slickster
/ˈslɪkstər/
noun
- A person who is clever, smooth, and often dishonest in dealing with others; a sly or tricky person.
- Watch out for that slickster; he'll promise you the world and deliver nothing.
- The slickster convinced everyone to invest in his fake business.
- She played the role of a slickster who could talk her way out of any trouble.