The phrase "wert mid air" refers to being suspended or floating in the middle of the air. Some alternative phrases that could be used as synonyms include "levitating," "hovering," or "flying in place." These words all describe a state in which someone or something is unsupported by the ground and remains stationary in the air. Other related phrases might include "weightless," "airborne," or "suspended in space." Each of these terms could convey a slightly different nuance depending on the context in which they are used, but all share a basic sense of being free from the constraints of gravity.