The word "tendril-climbing" refers to a plant's ability to climb or grow upwards using tendrils. However, there are a variety of other words that can be used to describe this behavior. One option is "vine-like," which suggests a similar behavior but without the specific reference to tendrils. "Climbing" or "scrambling" are also good choices, as they convey the idea of upward motion and growth. Additionally, words like "creeping," "crawler," or "rambler" can be used to describe plants that grow and climb more slowly or don't rely on tendrils specifically. Whatever word you choose, it's important to select one that accurately conveys the idea of upward growth in plants.