abstainer

plural abstainers

1. One who abstains; especially, one who abstains from something, such as the use of alcohol or drugs, or one who abstains for religious reasons; one who practices self-denial.First known use First attested around 1350 to 1470.

   '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.'

   1990, William Trevor, “Family Sins”, in The Collected Stories, New York: Viking, published 1992, page 1105

   2 more examples

   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.

   1920, Sigmund Freud, chapter V, in M. D. Eder, transl., Dream Psychology: Psychoanalysis for Beginners, New York: The James A. McCann Company

   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.

   1949, George Orwell, chapter 4, in Nineteen Eighty-Four

   Synonyms: Nazarite, teetotaler