Something or someone that crumples, wrinkles, or crushes something into a compact mass.
Agent noun from 'crumple' plus '-er'; 'crumple' itself comes from Old English and Germanic roots meaning to bend or curl, with '-er' indicating the tool or agent performing the action.
A crumpler can be a person, like someone crumpling paper, or a device, like a mechanical crumpler—English lets the same word work for both because both perform the action.
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