Which one word is used for a person who completely abstains from drinking alcoholic beverages?

Introduction / Context:
This question belongs to the one word substitution and vocabulary section of verbal reasoning. It asks for a single term used to describe a person who never consumes alcoholic drinks. Knowing such precise words not only helps in exams but also improves comprehension of articles, biographies and social discussions. Recognising standard labels for behaviours and lifestyles is an important part of advanced vocabulary.

Given Data / Assumptions:
The description is a person who abstains from alcoholic drinks. The options are Teetotaller, Heretic, Angler, Drunkard and Monk. We must select the one word that best matches this description in standard English usage. We assume no specialised religious or regional meanings beyond widely accepted dictionary definitions. The focus is on the specific habit of not taking alcohol at all.

Concept / Approach:
A teetotaller is a well known term for someone who never drinks alcoholic beverages, often due to personal, health or religious reasons. Heretic refers to someone who holds beliefs that disagree with established religious doctrines. An angler is a person who fishes with a rod and line. A drunkard is someone who habitually drinks too much alcohol. A monk is a member of a religious community, and while many monks do avoid alcohol, the word itself does not specifically mean a non drinker. The task is to map the description to the most precise term.

Step-by-Step Solution:
Focus on the key phrase abstains from alcoholic drinks, which describes a total avoidance of alcohol. Recall that the word teetotaller refers to exactly such a person, one who practices complete abstinence from alcohol. Check Heretic: this relates to unorthodox religious belief and has nothing to do directly with drinking habits. Angler is associated with fishing as a hobby or occupation and again has no relation to alcohol consumption. Drunkard refers to the opposite behaviour, someone who drinks too much and is often intoxicated. Monk refers to a religious life, and while many monks may avoid alcohol, the term itself is broader and not specific to this habit. Therefore the only exact match is Teetotaller.

Verification / Alternative check:
You can verify by thinking of common usage in sentences. For example, you might hear phrases like he has been a teetotaller since college or she became a teetotaller for health reasons. These sentences clearly interpret the word as complete abstinence from alcohol. You would not naturally use Heretic, Angler or Monk in such contexts. Drunkard would mean nearly the opposite, someone who drinks excessively. This real world usage check confirms that teetotaller is the only option that matches the given description accurately and specifically.

Why Other Options Are Wrong:
Heretic deals with belief systems, not drinking behaviour, so it is unrelated. Angler focuses on fishing, which is a hobby or occupation, again unrelated to alcohol consumption habits. Drunkard means habitual heavy drinker, directly opposite to abstainer, so it clearly cannot be correct. Monk refers to a religious person whose lifestyle may involve many strict practices, but not all monks are necessarily non drinkers, and the term does not define that behaviour alone. Therefore, each of these options fails to capture the specific idea of avoiding alcoholic drinks completely.

Common Pitfalls:
Some candidates may be unfamiliar with the term teetotaller and therefore either skip the question or guess among more familiar words like Monk. Another pitfall is to over interpret Monk as meaning non drinker simply because many religious orders do discourage alcohol. However, exams usually expect the most precise dictionary definition, not an indirect association. To avoid such mistakes, it helps to build a list of common one word substitutes such as philanthropist, misogynist, omnivore and teetotaller. Regular revision of these terms greatly improves your performance in vocabulary based questions.

Final Answer:
The correct one word substitute for a person who abstains from alcoholic drinks is Teetotaller.