The antonyms for the term "dead air" can be lively, active, dynamic, energetic, lively, vibrant, buzzing, bustling, or humming. These words refer to a state of lively communication or energy in a place, situation, or atmosphere.
Lively air indicates a dynamic or energetic environment that is full of movement and activity, which is the opposite of dead air. Active air represents an environment that is enthusiastic and energetic, always shifting and changing.
On the other hand, vibrant air suggests an atmosphere brimming with energy, color, and excitement. Buzzing air conveys a sense of intense activity and energy, with people moving quickly and efficiently.
Finally, bustling air refers to a crowded, bustling atmosphere, characterized by many people going about their business.