Teetotalism
Today I learned about Teetotalism, a practice of personal abstinence from alcoholic drinks. Basically veganism, but about alcoholic drinks. The reasons for people practising this, are diverse and range from religious believes to simple preference.
I came across its Wikipedia page while checking another page of a celebrity, apparently part of this movement. Not knowing what the word could mean, I decided to read the page, and learn something new.