The antonyms for the phrase "being seated on" could include standing, walking, running, jumping, dancing, lying down or reclining. These actions refer to movements that are performed while in an upright position or while lying down. Standing refers to the act of being upright on one's feet, while walking involves moving one's legs in a rhythmic way. Running and jumping imply movement with speed and energy, while dancing involves movement performed to music. Lastly, lying down or reclining refer to lying on one's back, side or stomach. These are all opposite actions to being seated on something, such as a chair or a couch.