Three-coloured is a term that describes something having three different colors or shades. There are various synonyms for three-colored, including tricolored, tri-colored, and tri-toned. Other synonyms include variegated, multi-hued, and rainbow-hued, which denote objects with different colors. If you see an object that has three distinct colors, you could describe it is as having a triad of colors, an assortment of colors, or a mix of colors. Tri-color and three-colored can be used interchangeably to describe things like flags, clothes, or animals with three colors. It's important to use accurate and descriptive synonyms when writing to make your work more engaging and easily understood.