The antonyms for the word "most ear splitting" would be words or phrases that connote a lack of noise or a gentle sound. These antonyms include words like silent, hushed, faint, gentle, low, and muffled. The opposite of ear splitting would be a pleasant or calming sound, such as a peaceful melody or the sound of ocean waves. Rather than causing pain or discomfort, these sounds evoke relaxation and a sense of well-being. It is important to note that the antonyms of "most ear splitting" are not synonymous with the absence of sound, but rather a more agreeable and less intense sound.