Related Clues:

• Still kicking
• Like bees, stereotypically
• Frequently traded, in the stock market
• In use, as a phone line
• Not dormant
• Like one with a full schedule
• On the roster
• At it
• Very active
• Doing something
• Not taking calls, perhaps
• Capable of erupting
• Not passive
• Dynamic, functioning
• Keeping busy or operative