Related Clues:

• Recluse
• Hermit
• Monk, perhaps
• Spartan
• Austere
• Practicing great self-denial
• Strictly self-denying
• Religious recluse
• One who leads a Spartan lifestyle
• Self-denying
• Hardly self-indulgent
• Mahatma Gandhi, for one
• Hardly a hedonist
• Like some monks
• Abstainer