A boorish, rude, or coarse person; someone lacking manners or refinement.
From German Grobianism or Dutch grobian. The term emerged in Renaissance Europe to describe uncouth behavior, from a root suggesting roughness or coarseness.
Grobian comes from a 16th-century German satirical work about a crude character who did everything wrong as a comedy — the character became so famous that his name became a word for rudeness!
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