Related Clues:

• Illumination - not serious!
• Match - agile - easily digested
• Easily lifted
• Form of radiation - not serious
• Weighing little
• Without solid animal or vegetable oils
• Containing no greasy substances
• Moored vessel warning sailors of a hazard
• Adspeak for "less caloric"
• With 31-Across, favored weapon of 36-/39-Across
• Settle what's not serious
• Miller ___ (low-calorie beer)
• Developing problem
• Miner's hat feature
• Work after work?