Adjective: roguish row-gish
- Playful in an appealingly bold way
"a roguish grin";
- devilish, rascally
- Lacking principles or scruples
"the captain was set adrift by his roguish crew";
- rascally, scoundrelly, blackguardly
See also: dishonest, dishonorable [US], dishonourable [Brit, Cdn], ludic [formal], playful