Tom was too clear-sighted not to be aware that Mr. Stelling’s standard of things was quite different, was certainly something higher in the eyes of the world than that of the people he had been living amongst, and that, brought in contact with it, he, Tom Tulliver, appeared uncouth and stupid; he was by no means indifferent to this, and his pride got into an uneasy condition which quite nullified his boyish self-satisfaction, and gave him something of the girl’s susceptibility.
There are no more uses of "uncouth" in the book.
Show samples from other sources
Jane spat into the fire, the most uncouth, ill-mannered act of her life.
Margaret Peterson Haddix -- Uprising
Most of them uncouth, although very few were unearned.