The antonyms for the word "most shivered" include words that indicate a lack of trembling or shaking, such as composed, calm, and collected. Other antonyms for "most shivered" might include words like unafraid, unfazed, steady, and tranquil. These words describe a state of being that is opposite to the feeling of trembling or shivering, which is often associated with fear or anxiety. When we feel composed or calm, for example, we are able to face challenges or difficult situations with confidence and poise. By contrast, when we feel most shivered, we may be struggling with fear or uncertainty, and may need to take steps to calm ourselves down and regain our composure.