Someone who chooses not to drink alcohol. They might do it for health reasons, religious beliefs, or just personal preference.
He's an abstainer because he's recovering from alcoholism.
She's an abstainer for religious reasons.
Many people become abstainers after realizing the negative effects of alcohol on their health.
Someone who avoids doing something they might enjoy, often for religious or spiritual reasons. It's like giving up a pleasure as a form of self-discipline.
The monks were abstainers from worldly pleasures.
She was an abstainer from gossip and always tried to speak kindly of others.
He was an abstainer from meat during Lent.