The phrase "wert in mid-air" can be replaced by several synonyms that convey a similar meaning. Some options include "suspended in the air," "hovering," "floating," "levitating," "airborne," or "adrift." Each of these synonyms implies a sense of weightlessness or lack of support, as if the object or person is defying gravity. This phrase can be used to describe a variety of scenarios, such as a balloon floating in the sky or a bird hovering above its prey. By using synonyms, writers can add variety to their language and create more nuanced descriptions that capture the reader's attention.