His refusal to appreciate classical music made him seem uncultured.

uncultured 是由前缀 un-（表示"不、非"）和形容词 cultured（有文化修养的）组成的形容词。cultured 来自名词 culture（文化），加上后缀 -ed 表示"具有...特征的"。uncultured 整体意思是"缺乏文化修养的、未受教育的"。