"Wert on the air" is a phrase used to describe a person who is broadcasting live or speaking publicly. There are several synonyms and related phrases that can be used in place of "wert on the air." These include "live on air," "broadcasting live," "speaking publicly," "on the mic," "in front of the camera," and "addressing the audience." Each of these phrases can be used to describe someone who is actively communicating with a group of people, whether through a radio or television program, public speech, or other medium. Overall, these synonyms provide a range of options for describing someone who is in the spotlight and sharing their message with the world.