General Antonyms:
* Loud
* Noisy
* Boisterous
* Rowdy
* Hushed
* Still
Contextual Antonyms:
* Active (if "quiet" refers to inactivity)
* Talkative (if "quiet" refers to silence)
* Busy (if "quiet" refers to a lack of activity)
* Energetic (if "quiet" refers to a lack of energy)
It's important to consider the specific meaning of "quiet" in the sentence to choose the most accurate antonym.