Related Clues:

• Closely related
• Alternative to 'in a bottle'
• Available, as a doctor
• Watching
• Not bottled, as beer
• Handy to
• Easy to access, perhaps
• Quick on the uptake
• Attentive
• With ears pricked
• Not nodding
• Red flag, e.g.
• Ready for use
• Prepared for action
• Beepable, as a doctor