General Opposites:
* Loudly: This is the most straightforward opposite. It refers to a high volume of sound.
* Noisily: Similar to loudly, but emphasizes the presence of sound, not necessarily its intensity.
* Clearly: This refers to audibility, the opposite of being difficult to hear.
Contextual Opposites:
* Boldly: If "quietly" implies discretion, then "boldly" suggests confidence and openness.
* Brashly: If "quietly" means reserved, then "brashly" indicates impulsiveness and loudness.
* Openly: If "quietly" suggests secrecy, then "openly" implies transparency.
Antonyms for specific contexts:
* For "quietly weeping": loudly crying
* For "quietly working": boisterously working
* For "quietly observing": actively participating
Ultimately, the best opposite of "quietly" depends on the specific situation you're considering.