Which term relates to something being of little significance or of lower quality?

The term "marginal" specifically refers to something that is of little significance, importance, or lower quality. When something is described as marginal, it indicates that it sits at the edge or periphery of relevance, suggesting that it does not greatly influence or impact the overall situation or quality.

Understanding "marginal" helps in contexts where one might discuss things that are not central or are only slightly related to the main issue at hand. This term effectively captures the idea of something being lesser or not quite meeting a standard of worth or significance.

In contrast, "perennial" refers to something that lasts for a long time or recurs consistently, which does not align with the notion of insignificance or lower quality. "Superfluous" means exceeding what is sufficient or necessary, which also does not directly imply low significance but rather excess. Lastly, "mitigate" relates to making a situation less severe, serious, or painful, which again does not convey the idea of something being of lower quality or significance. Thus, "marginal" is the most appropriate term in this context.