Related Clues:

• No mixer
• Not the gregarious type
• Unsociable sort
• One not mingling much
• Indebted to the pot, in poker lingo
• Hardly a company man
• Unlikely to break the ice
• Lacking self-confidence
• Reluctant to mingle
• Wary of people
• One who doesn't mingle
• Garbo, by choice
• Leaver of the pack?
• Spotlight-avoiding
• One averse to mingling