When referring to a physical position, there are various synonyms that can be used instead of "standing on". These include phrases like "perched on", "resting on", "balancing on", "supported by", or "propped up by". Each of these conveys a slightly different meaning and may be more appropriate depending on the context or object being referenced. For example, "perched on" might be used to describe a bird sitting on a branch, while "resting on" could be used to describe a mug sitting on a table. The use of synonyms can add variety to writing and help to paint a more vivid picture for readers.