Teetotalism refers to either the practice of or the promotion of complete abstinence from alcoholic beverages. A person who practices (and possibly advocates) teetotalism is called a teetotaler or is simply said to be teetotal.
Some common reasons for choosing to be a teetotaler are religious, health, family, fear of gastric or social reasons, and, sometimes, as simply a matter of taste or preference. When at drinking establishments, teetotallers either abstain from drinking or consume non-alcoholic beverages such as tea, coffee, water, juice, soft drinks and mocktails.