Related Clues:

• No social butterfly
• St. Anthony, notably
• Independent sort
• Antisocial type
• Anchorite
• Person who prefers solitude
• Hardly the gregarious type
• Hermit, for one
• One keeping one's own company
• Homebody
• No-show at a mixer
• Company dodger
• Company avoider
• Society avoider
• Extrovert's opposite