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