The words that most closely matches the denotation of the bold words are:
Her fervent piety and watchful uprightness made it impossible to see her without thinking and feeling—"that woman is a Christian." [diligent]
The most interesting feature of my history here was my learning to read and write, under somewhat marked disadvantages. [considerable]
Words like these, I observed, always troubled them; and I had no small satisfaction in wringing from the boys, occasionally, that fresh and bitter condemnation of slavery, that springs from nature, unseared and unperverted. [pure,uncorrupted]
Fredrick Douglass wrote his own account of life in which he mentioned about the ills of slavery and about the hardships which the slaves had to undergo. He had tried to expose the cruelty of slavery which doesn't spare anyone born in a black family. He points out the idea that a slave is a form of property owned by the master and he possesses full control over him.
