A person who drinks beverages, especially one who regularly drinks alcohol.
From Old English 'drincan' plus the agent suffix '-er,' which creates 'one who does the action.' This '-er' suffix is one of English's most productive word-building tools.
The '-er' suffix might be the most magical particle in English—add it to almost any verb and you get a person: drink→drinker, teach→teacher, write→writer. It's how we've created hundreds of job titles and character descriptions.
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