Cutin is a naturally occurring polyester that forms a waxy coating on the surface of plants, which protects them from external damage. However, every word has its opposite, and "cutin" is no exception. The antonyms for cutin could be "unprotected," "vulnerable," "exposed," "naked," or "bare." These words describe the absence of any protective coating on the plant's surface, making it susceptible to environmental factors such as wind, rain, and pests. While cutin exists to shield plants from harm, its absence can put them in perilous situations. Hence, cutin's antonyms emphasize the importance of this naturally occurring substance to plants and how they depend on it for their survival in the wild.