sworn off (?.)

• Apostolic
• Encratic
• Lenten
• Pythagorean
• Rechabite
• Shaker
• Spartan
• Stoic
• abstemious
• abstinent
• ascetic
• celibate
• chaste
• continent
• fruitarian
• nephalistic
• on the wagon
• sexually abstinent
• teetotal
• vegetarian