The word "rupestral" is often used to describe something that lives or grows on rocks or cliffs. However, there are many other synonyms that can be used to convey a similar meaning. Some examples include "crevicular," "lithic," and "rock-dwelling." Other options include "cliff-dwelling," "rock-bound," or "rock-hugging." The word "stony" can also be used to describe something that is rocky or composed of stones. Additionally, the words "rocky" and "mountainous" can be used to describe areas that are full of rocks and cliffs. No matter which synonym you choose, it will help to convey the same meaning as "rupestral".