It came as a reaction against the lie of romanticism and sentimentalism.
现实主义反对浪漫主义和感伤主义的谎言，它从一个陌生的世界转向了普通人的真实生活的描写。
人与鬼（上）
But suddenly he saw the reporter's face soften, and melt to a naive sentimentalism.
但突然间，他看到记者的脸色柔和下来，融化成一种天真的感伤。
英语百科
Sentimentalism
Sentimentalism is used in different ways:
It is not to be confused with sentimentality, which originally indicated the reliance on feelings as a guide to truth, but whose current usage defines it as an appeal to shallow, uncomplicated emotions at the expense of reason.