There are several synonyms for the word "veinal" that can be used to describe something that is related to veins or vein-like patterns. One alternative term is "vascular," which specifically refers to blood vessels and their functions. Another option is "venous," which is often used to describe the appearance or characteristics of veins themselves, such as their color or texture. "Veiny," "veinlike," and "veinous" are other possible synonyms that can convey similar meanings. These terms may be particularly useful in medical or scientific contexts, as well as in visual art or decorative design that features vein-like patterns.