Antonyms for the phrase "be seated on" include standing up, rising, getting up and standing. These words signify the act of moving from a seated position. People stand up or rise for several reasons, such as to move or walk around, stretch their muscles, or show respect. It is essential to know antonyms of phrases like "be seated on" as it can help establish variation and clarity in communicating. For example, instead of always instructing someone to be seated on a chair, you can ask them to stand up and stretch or rise to their feet to emphasize a point. In summary, knowing antonyms adds more depth and flexibility to language use.