Hollering out is a loud and boisterous way of expressing oneself. However, it may not always be the most appropriate or polite way of communicating. Instead, one can use various antonyms for the word hollering out to convey a more refined and composed tone. Some of these antonyms include whisper, murmur, mutter, speak softly, talk, converse, and communicate. Using these words can help in creating a respectful, calm, and serene environment. It can also help in avoiding misunderstandings and conflicts that may arise due to loud and aggressive communication. So, instead of hollering out, try to use these antonyms to communicate with others more effectively.