General Antonyms:
* Whispered: A soft, quiet way of speaking.
* Muttered: Spoken in a low, indistinct voice.
* Said quietly: Spoken softly and without force.
* Spoke calmly: Delivered with a peaceful and controlled tone.
* Shouted softly: This is a bit of a contradiction, but it could be used if someone is trying to be loud but failing.
Antonyms Specific to Meaning:
* Called: If "hollered" means to call out, "called" could be a more polite alternative.
* Yelled: If "hollered" means to yell loudly, "yelled" could be an antonym if the context suggests something more severe than just a loud call.
* Asked: If "hollered" means to ask loudly and forcefully, "asked" could be a gentler synonym.
Example:
Instead of "He hollered at the dog to come inside," you could say "He called the dog to come inside."
The best antonym will depend on the specific meaning of "hollered" in your sentence.