Most super-imposed refers to something that is overlapping or has been overlaid with another image. Synonyms for this phrase include overlapping, layered, nested, superimposed, and stacked. These words all describe the same concept of one image being placed on top of another to create a new composition. Other synonyms might include combined, merged, blended, fused, or integrated, which suggest a more seamless integration of the two images. Regardless of the specific wording, all of these synonyms represent the idea of two things coming together in a way that creates a new, more complex whole.