Setaceous means having bristles or bristly hairs. Its antonyms are smooth, sleek, hairless, soft, and velvety. Some examples of smooth and hairless animals are dolphins, whales, and snakes. Velvetly animals include rabbits, deer, and cats. On the other hand, bristly plants like cactus, thistle, and burdock are setaceous. In cosmetics, there are setaceous brushes, which are designed to pick up and apply powder products. In architecture, setaceous columns are characterized by spiraling flutes that resemble bristly hairs. By knowing the antonyms of setaceous, we can use them to describe and differentiate various objects in everyday life.