Purple-fruited is a term used to describe a plant or tree that produces fruit with a purple color. However, there are several synonyms that can be used to describe such plants. Some of these words include amethystine, lavender, violet, and orchidaceous. While these words may not be commonly used, they provide an alternative to the overused "purple-fruited" and can bring a new level of sophistication to your writing. Additionally, these words can be used to describe other aspects of a plant or tree, such as its leaves or flowers, bringing a fresh, descriptive element to your writing.