A person or device that empties something, such as a trash can emptier or a person who empties containers.
From empty + -er (agent noun suffix indicating one who does an action), derived from Old English -ere, an old agent suffix that was largely replaced by -er but survives in many occupational terms.
Emptier is a straightforward agent noun—someone who empties things—but it's rarely used because we prefer more specific terms like 'garbage collector' or 'janitor.' It's a reminder that English can theoretically turn any verb into a job description with -er.
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