Earlier quoted context omitted.
> it was the same for me, the language feels very different by 1300. The language in section 1300 isn't much different from section 1400. Almost all of it is still good English today if you give the words their modern spelling: Then after much time spoke the Master, and his words were cold as winter is. His voice was as the crying of ravens, sharp and shrill, and all that heard him were adread and durst not speak. "I…
From some random googling it seems like "swie" could be "silence", but it doesn't seem to be quite that meaning. There may be some religious overtones .
Here the text says "I swied", so it has to be a verb, but the meaning "be silent" makes sense in the passage.
Something to think about in this exercise is that the shortness of the passages adds difficulty.
Consider section 1200, where a verb with the root ner is used. It's given so much focus and contextual elaboration that you can easily tell what it means, even though the word is unfamiliar.
If you read longer passages of Middle English, this same phenomenon will occur with more words.