In these lines of "My Bondage and My Freedom" by Frederick Douglass, you might encounter several words that are unfamiliar. The word "watchful" is most similar to "diligent." This means that the woman Douglass is talking about was very disciplined and careful about maintaining a moral behaviour. Moreover, the word "marked" means "considerable" and it describes the difficulties that Douglass faced during his life. Finally, the word "unseared" means pure and uncorrupted, and it describes the natural feeling men have against slavery.
