Related Clues:

• Malefactor
• No stay-at-home
• Activist
• Opposite of a thinker
• Live wire, so to speak
• Busy one
• Crook
• No layabout
• One who has life to look forward to?
• Wrong end?
• One on the go
• Record holder?
• One facing life, maybe
• No mere spectator
• Hardly a side-liner