Sentence:  O Pride, of all heaven-relapsing <WSD>"praemunires</WSD>" the most fearful – thou that ere this had disparadised our first parent, Adam, and unrighteoused the very angels –, how shall I arm mine elocution to break through the ranks of thy hilly stumbling blocks? 
Meaning of the word marked with <WSD> tags:  Crime, offence, wrongdoing.