adjective
a word that describes or modifies a noun or pronoun, in this case 'uncultured' describes someone or something lacking in culture or refinement
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The uncultured behavior of the tourists offended the locals.
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I can't believe how uncultured some people can be.
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She's so uncultured, she doesn't even know who Shakespeare is.
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His mind was like an uncultured field, barren of knowledge and enlightenment.