More rachitic refers to being weaker, more fragile, and having a more pronounced curvature of the spine. An antonym for more rachitic would be stronger, healthier, and more resilient. The opposite of being rachitic means having a straighter spine, better posture, and a robust appearance. Some other antonyms for more rachitic could be vigorous, sturdy, and muscular. While rachitic can be used to describe a person or an object, it is often used to describe a person, especially a child, who is suffering from a deficiency of Vitamin D, calcium, or phosphate, leading to bone deformities. Antonyms for more rachitic have a positive connotation and suggest robust health.