Related Clues:

• Asocial type
• Quarantine
• Friendless one
• Individualist
• Practicing great self-denial
• Maverick
• Solitude seeker
• No social butterfly
• Coop up
• St. Anthony, notably
• Independent sort
• Cave dweller, e.g.
• Antisocial type
• Anchorite
• Hardly the gregarious type