The word "hyper" indicates an excessive amount of activity or energy. The antonyms, or opposite words, for "most hyper" would be calm, relaxed, serene, quiet, peaceful, and tranquil. These words describe a state of being that is opposite to hyper, where there is little to no activity or excitement. A calm and peaceful mindset can be achieved through relaxation and meditation. It is essential to take steps to stay relaxed and focused on achieving wellness to avoid constantly living in a "most hyper" state of stress and anxiety. In short, the antonyms for "most hyper" bring balance and stability to one's life.