Abstainer

To one of my very nervous patients, who was an abstainer, whose fancy was fixed on his mother, and who repeatedly dreamed of climbing stairs accompanied by his mother, I once remarked that moderate masturbation would be less harmful to him than enforced abstinence.

Source: wiktionary

He was a total abstainer and a nonsmoker, had no recreations except a daily hour in the gymnasium, and had taken a vow of celibacy, believing marriage and the care of a family to be incompatible with a twenty-four-hour-a-day devotion to duty.

Source: wiktionary

'Never himself touches a drop of the stuff, you understand. Having been an abstainer since the age of seven or something. A clerky figure even as a child.'

Source: wiktionary