a person who abstains from something regarded as improper or unhealthy, especially the drinking of alcoholic beverages. a person who abstains from anything.

What does abstention mean in English?

the fact of not voting in favour of or against someone or something: There were high levels of abstention (from voting) in the last elections.

What is the antonym of abstainer?

Opposite of one who abstains from something. bibber. drinker. alcoholic. drunk.