Answer:
post a picture of the poem it will be helpful
Explanation:
Nimbused basically means surrounded. "They were nimbused <span>by the last light of a sun that had set"
So a synonym could be engulfed or surrounded.
Hope that helps!</span>
Umm not to be rude but what book because you did not say?
Superlative because superlatives are words that have -est at the end