Antonyms for the word "more geriatric" can be defined as words that denote youthfulness, vitality, and energy. Some of the antonyms for the word "more geriatric" include "lively," "young," "vigorous," "energetic," and "youthful." These antonyms are often used to describe people who have a lot of energy, vitality, and youthfulness. They are also used to describe objects, activities, or experiences that are associated with youthfulness and liveliness. The use of antonyms for the word "more geriatric" provides a powerful tool for expressing contrasts and emphasizing the positive qualities of the contrasting terms.