An oxymoron is a figure of speech that combines two seemingly contradictory terms. In this case, the oxymoron is "muffled still should without eyes see." This phrase is contradictory because it says that something is both muffled (hidden or obscured) and still (not moving or changing). However, the phrase makes sense when you consider the context of the poem. The poet is talking about love, which is often blind. Even though love is blind, it still finds a way to see its way to its object of desire.