1. a person who completely abstains from alcoholic beverages

Examples

• As a teetotalist, she always orders sparkling water at parties.
• The reformed alcoholic became a strict teetotalist after his recovery.
• My grandfather was a lifelong teetotalist who never touched a drop of alcohol.
• The teetotalist movement gained momentum during the temperance era.
• Being a teetotalist, he declined the wine offered at dinner.
• She surprised her friends by announcing she had become a teetotalist.