n. A person who completely abstains from alcoholic beverages.
the GNU version of the Collaborative International Dictionary of English
n. One pledged to entire abstinence from all intoxicating drinks.
The Century Dictionary and Cyclopedia
n. One who more or less formally pledges or binds himself to entire abstinence from intoxicating liquors, unless medically prescribed; a total abstainer.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a total abstainer
Word Usage
"Apparently, down the rabbit hole with Alice where only a teetotaler is good enough to be called serious on drunk driving, or a Democrat, or someone who thinks a one time no harm incident is a death sentence."