"Rainbow-like" can be described in numerous ways depending on the context. To convey a similar meaning, one could use terms like "prismatic", "iridescent", "multicolored", "rainbow-hued", "colorful", "variegated", "chromatic", "polychromatic", "kaleidoscopic" and "painted". All of these words bring to mind the same visual image of bright and vibrant colors, reminding us of the beauty of nature's endless array of colors. Whether we are writing about nature, fashion, or design, using a variety of synonyms for "rainbow-like" can make our writing more interesting and engaging, allowing us to describe the world around us in more detail.