1. In jest
   "I asked him jokingly whether he thought he could drive the Calcutta-Peshawar express"
   - jestingly 
2. Not seriously
   - facetiously, tongue-in-cheek

See also: joking

Encyclopedia: Jokingly

• red coral
• Red Crescent
• Red Cross
• red currant
• red cypress pine
• red dagga
• red deer
• Red Delicious
• red devil
• red dogwood
• red drum
• red dwarf
• red dwarf star
• red eft
• red elm
• red false mallow
• red fire
• red flag
• red fox
• red giant
• red giant star
• red ginger
• red goatfish
• red goosefoot
• red gram