Rainbow-colored refers to the colors of the rainbow, often symbolizing beauty, diversity, and hope. Some synonyms for rainbow-colored include multicolored, prismatic, kaleidoscopic, iridescent, polychromatic, varicolored, and chromatic. Multicolored refers to a range of colors, while prismatic describes a rainbow-like display of colors caused by the refraction of light. Kaleidoscopic refers to the colors seen in a kaleidoscope, while iridescent indicates the shimmering colors seen on a surface. Polychromatic signifies the presence of many colors, varicolored has a similar meaning but with varied hues, and chromatic refers to colors in general. These synonyms offer a variety of options to describe the beautiful and colorful hues of a rainbow.